301 Area Code: Location, Cities, Map And Time Zone

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Area code 301 is in Maryland, USA , spanning 11 counties and serving 181 cities , including Germantown, Frederick or Silver Spring; it currently uses 784 prefixes , assigned from 301-200-XXXX through 301-998-XXXX.

In service since January 01, 1947, area code 301 is the parent Numbering Plan Area in overlay complex 301/240/227.

The current local time is .

301 area code location on a map
© OpenStreetMap contributorsFor exact NPA boundaries see official 301 area code map

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More Maryland area codes:

  • 227
  • 240
  • 410
  • 443
  • 667

Locate any 301-NXX prefix:

301-200-XXXX --- 301-299-XXXX
NPANXX Carrier1 Area Served2 Date3
301-200 Bandwidth.com Clec Indian Head 2/24/2011
301-201 New Cingular Wireless PCS Washington Zone 10 11/7/2022
301-202 New Cingular Wireless PCS Washington Zone 2 12/19/2008
301-203 Verizon Maryland Washington Zone 6 N/A
301-204 New Cingular Wireless PCS Washington Zone 2 N/A
301-205 Verizon Maryland Washington Zone 14 N/A
301-206 Verizon Maryland Washington Zone 13 N/A
301-207 USA Mobility Wireless Washington Zone 13 N/A
301-208 Verizon Maryland Gaithersburg N/A
301-209 Verizon Maryland Washington Zone 4 N/A
301-210 Verizon Maryland Laurel N/A
301-212 Verizon Maryland Washington Zone 10 N/A
301-213 Omnipoint Communications Cap Operations Washington Zone 3 N/A
301-214 Verizon Maryland Washington Zone 2 N/A
301-215 Verizon Maryland Washington Zone 2 N/A
301-216 Verizon Maryland Gaithersburg N/A
301-217 Verizon Maryland Washington Zone 10 N/A
301-218 Verizon Maryland Washington Zone 14 N/A
301-219 New Cingular Wireless PCS Washington Zone 2 N/A
301-220 Verizon Maryland Washington Zone 13 N/A
301-221 New Cingular Wireless PCS Washington Zone 2 N/A
301-222 Paetec Itel Washington Zone 2 N/A
301-223 Verizon Maryland Williamsport N/A
301-224 USA Mobility Wireless Washington Zone 2 N/A
301-225 Teleport Communications America Washington Zone 14 5/21/2009
301-226 Verizon Maryland Washington Zone 4 N/A
301-227 Verizon Maryland Washington Zone 2 N/A
301-228 Verizon Maryland Frederick N/A
301-229 Verizon Maryland Washington Zone 2 N/A
301-230 Verizon Maryland Washington Zone 11 N/A
301-231 Verizon Maryland Washington Zone 11 N/A
301-232 MCIMetro Access Transmission Services Ashton N/A
301-233 Cellco Partnership Washington Zone 3 N/A
301-234 Verizon Maryland Washington Zone 16 N/A
301-235 MCIMetro Access Transmission Services Washington Zone 16 N/A
301-236 Verizon Maryland Washington Zone 12 N/A
301-237 Omnipoint Communications Cap Operations Washington Zone 3 N/A
301-238 Verizon Maryland Washington Zone 16 N/A
301-239 Verizon Maryland Washington Zone 4 N/A
301-240 Verizon Maryland Washington Zone 10 N/A
301-241 Verizon Maryland Highfield N/A
301-242 MCIMetro Access Transmission Services Brandywine N/A
301-243 Verizon Maryland Washington Zone 2 7/20/2006
301-244 Paetec Itel Washington Zone 3 N/A
301-245 Verizon Maryland Bittinger N/A
301-246 Verizon Maryland Nanjemoy N/A
301-247 New Cingular Wireless PCS Leonardtown N/A
301-248 Verizon Maryland Washington Zone 6 N/A
301-249 Verizon Maryland Washington Zone 14 N/A
301-250 MCIMetro Access Transmission Services Gaithersburg N/A
301-251 Verizon Maryland Washington Zone 10 N/A
301-252 MetroPCS Gaithersburg N/A
301-253 Verizon Maryland Damascus N/A
301-254 Omnipoint Communications Cap Operations Washington Zone 3 N/A
301-255 Verizon Maryland Washington Zone 11 N/A
301-256 MCIMetro Access Transmission Services Laurel N/A
301-257 Omnipoint Communications Cap Operations Washington Zone 3 N/A
301-258 Verizon Maryland Washington Zone 10 N/A
301-259 Verizon Maryland Tompkinsville N/A
301-260 Verizon Maryland Ashton N/A
301-261 Verizon Maryland Washington Zone 14 N/A
301-262 Verizon Maryland Washington Zone 14 N/A
301-263 Verizon Maryland Washington Zone 2 N/A
301-264 Verizon Maryland Mt Savage N/A
301-265 Verizon Maryland Washington Zone 6 N/A
301-266 New Cingular Wireless PCS Waldorf N/A
301-267 Omnipoint Communications Cap Operations Washington Zone 3 10/4/2011
301-268 Uscoc Of Cumberland Cumberland N/A
301-269 MCIMetro Access Transmission Services Washington Zone 2 11/11/2014
301-270 Verizon Maryland Washington Zone 3 N/A
301-271 Verizon Maryland Thurmont N/A
301-272 MCIMetro Access Transmission Services Washington Zone 2 N/A
301-273 MCIMetro Access Transmission Services Washington Zone 3 N/A
301-274 Verizon Maryland Hughesville N/A
301-275 New Cingular Wireless PCS Washington Zone 2 N/A
301-276 MCIMetro Access Transmission Services Washington Zone 4 N/A
301-277 Verizon Maryland Washington Zone 4 N/A
301-278 MCIMetro Access Transmission Services Washington Zone 5 N/A
301-279 Verizon Maryland Washington Zone 10 N/A
301-280 Verizon Maryland Washington Zone 2 N/A
301-281 MCIMetro Access Transmission Services Washington Zone 6 N/A
301-282 Verizon Maryland Washington Zone 12 N/A
301-283 Verizon Maryland Washington Zone 6 N/A
301-284 MCIMetro Access Transmission Services Washington Zone 10 N/A
301-285 Verizon Maryland Washington Zone 3 N/A
301-286 Verizon Maryland Washington Zone 13 N/A
301-287 MCIMetro Access Transmission Services Washington Zone 11 N/A
301-288 MCIMetro Access Transmission Services Washington Zone 12 N/A
301-289 MCIMetro Access Transmission Services Washington Zone 13 N/A
301-290 Verizon Maryland Mechanicsville N/A
301-291 MCIMetro Access Transmission Services Washington Zone 14 N/A
301-292 Verizon Maryland Washington Zone 6 N/A
301-293 Verizon Maryland Myersville N/A
301-294 Verizon Maryland Washington Zone 10 N/A
301-295 Verizon Maryland Washington Zone 2 N/A
301-296 MCIMetro Access Transmission Services Washington Zone 10 N/A
301-297 Verizon Maryland Washington Zone 16 N/A
301-298 MCIMetro Access Transmission Services Washington Zone 15 N/A
301-299 Verizon Maryland Washington Zone 10 N/A
301-300-XXXX --- 301-399-XXXX
NPANXX Carrier1 Area Served2 Date3
301-300 Cellco Partnership Washington Zone 2 3/30/2007
301-301 Onvoy Gaithersburg 8/30/2022
301-302 MetroPCS Hagerstown 10/5/2004
301-303 USA Mobility Wireless Washington Zone 13 N/A
301-304 Comcast IP Phone Walkersville 3/6/2007
301-305 MetroPCS Frederick N/A
301-306 Verizon Maryland Washington Zone 4 N/A
301-307 Verizon Maryland Washington Zone 13 N/A
301-308 USA Mobility Wireless Washington Zone 13 N/A
301-309 Verizon Maryland Washington Zone 10 N/A
301-310 Verizon Maryland Laurel N/A
301-312 New Cingular Wireless PCS Washington Zone 2 N/A
301-313 Verizon Maryland Washington Zone 13 N/A
301-314 Paetec Itel Washington Zone 4 N/A
301-315 Verizon Maryland Washington Zone 10 N/A
301-316 Verizon Maryland Washington Zone 5 N/A
301-317 Verizon Maryland Laurel N/A
301-318 New Cingular Wireless PCS Washington Zone 2 N/A
301-319 Verizon Maryland Washington Zone 2 N/A
301-320 Verizon Maryland Washington Zone 2 N/A
301-321 Onvoy Washington Zone 11 N/A
301-322 Verizon Maryland Washington Zone 4 N/A
301-323 Level 3 Telecom Of Maryland Laurel N/A
301-324 Verizon Maryland Washington Zone 5 N/A
301-325 Cellco Partnership Washington Zone 3 N/A
301-326 Omnipoint Communications Cap Operations Washington Zone 3 N/A
301-327 Comcast IP Phone Washington Zone 15 3/9/2006
301-328 Comcast IP Phone Washington Zone 3 6/21/2006
301-329 Onvoy Ashton N/A
301-330 Verizon Maryland Gaithersburg N/A
301-331 New Cingular Wireless PCS Hagerstown N/A
301-332 New Cingular Wireless PCS Washington Zone 3 N/A
301-333 Verizon Maryland Washington Zone 5 N/A
301-334 Verizon Maryland Oakland N/A
301-335 New Cingular Wireless PCS Washington Zone 2 N/A
301-336 Verizon Maryland Washington Zone 5 N/A
301-337 MCIMetro Access Transmission Services Gaithersburg N/A
301-338 Idt America Cumberland 1/31/2006
301-339 Paetec Itel Washington Zone 10 N/A
301-340 Verizon Maryland Washington Zone 10 N/A
301-341 Verizon Maryland Washington Zone 4 N/A
301-342 Verizon Maryland Lexington Park-Great Mills N/A
301-343 MetroPCS Washington Zone 5 N/A
301-344 Verizon Maryland Washington Zone 13 N/A
301-345 Verizon Maryland Washington Zone 13 N/A
301-346 New Cingular Wireless PCS Washington Zone 3 N/A
301-347 Verizon Maryland Washington Zone 2 N/A
301-348 MCIMetro Access Transmission Services Washington Zone 11 N/A
301-349 Verizon Maryland Poolesville N/A
301-350 Verizon Maryland Washington Zone 5 N/A
301-351 Cellco Partnership Washington Zone 3 N/A
301-352 Verizon Maryland Washington Zone 14 N/A
301-353 Verizon Maryland Washington Zone 10 N/A
301-354 Teleport Communications America Washington Zone 10 N/A
301-355 Verizon Maryland Gaithersburg 12/8/2005
301-356 Vdl Laurel N/A
301-357 Cellco Partnership Washington Zone 3 10/12/2006
301-358 Level 3 Communications Washington Zone 15 N/A
301-359 Verizon Maryland Westernport N/A
301-360 Verizon Maryland Frederick N/A
301-361 Level 3 Telecom Of Maryland Washington Zone 4 N/A
301-362 Verizon Maryland Laurel N/A
301-363 Level 3 Communications Damascus 8/16/2006
301-364 MCIMetro Access Transmission Services Washington Zone 4 N/A
301-365 Verizon Maryland Washington Zone 2 N/A
301-366 MetroPCS Gaithersburg N/A
301-367 Cellco Partnership Washington Zone 3 N/A
301-368 Verizon Maryland Damascus N/A
301-369 Verizon Maryland Washington Zone 13 N/A
301-370 MetroPCS Gaithersburg N/A
301-371 Verizon Maryland Middletown N/A
301-372 Verizon Maryland Washington Zone 16 N/A
301-373 Verizon Maryland Leonardtown N/A
301-374 Verizon Maryland Waldorf N/A
301-375 Verizon Maryland Indian Head N/A
301-376 Verizon Maryland Laurel N/A
301-377 Comcast IP Phone Laurel N/A
301-378 Comcast IP Phone Frederick 2/20/2007
301-379 Omnipoint Communications Cap Operations Washington Zone 3 N/A
301-380 Verizon Maryland Washington Zone 2 N/A
301-381 Onvoy Washington Zone 2 7/15/2022
301-382 Verizon Maryland Washington Zone 11 N/A
301-383 Comcast IP Phone Washington Zone 14 N/A
301-384 Verizon Maryland Washington Zone 12 N/A
301-385 New Cingular Wireless PCS Washington Zone 2 N/A
301-386 Verizon Maryland Washington Zone 4 N/A
301-387 Verizon Maryland Oakland N/A
301-388 Verizon Maryland Washington Zone 12 N/A
301-389 Level 3 Telecom Of Maryland Washington Zone 13 N/A
301-390 Verizon Maryland Washington Zone 14 N/A
301-391 Verizon Maryland Damascus N/A
301-392 Verizon Maryland La Plata N/A
301-393 Verizon Maryland Hagerstown N/A
301-394 Verizon Maryland Washington Zone 3 N/A
301-395 Cellco Partnership Laurel N/A
301-396 Verizon Maryland Waldorf N/A
301-397 Verizon Maryland Washington Zone 13 N/A
301-398 Verizon Maryland Washington Zone 10 10/9/2003
301-399 MetroPCS Waldorf N/A
301-400-XXXX --- 301-499-XXXX
NPANXX Carrier1 Area Served2 Date3
301-400 Verizon Maryland Washington Zone 2 3/29/2010
301-401 New Cingular Wireless PCS Frederick N/A
301-402 Verizon Maryland Washington Zone 2 N/A
301-403 Verizon Maryland Washington Zone 4 N/A
301-404 Omnipoint Communications Cap Operations Washington Zone 3 N/A
301-405 Paetec Itel Washington Zone 4 N/A
301-406 USA Mobility Wireless Washington Zone 2 N/A
301-407 Verizon Maryland Gaithersburg N/A
301-408 Verizon Maryland Washington Zone 3 N/A
301-409 Onvoy Spectrum Washington Zone 2 12/21/2021
301-410 Onvoy Spectrum Washington Zone 6 5/5/2022
301-412 New Cingular Wireless PCS Washington Zone 2 N/A
301-413 Verizon Maryland Washington Zone 11 N/A
301-414 Verizon Maryland Damascus N/A
301-415 Verizon Maryland Washington Zone 3 N/A
301-416 Verizon Maryland Myersville N/A
301-417 Verizon Maryland Washington Zone 10 N/A
301-418 Verizon Maryland Frederick 11/20/2002
301-419 Verizon Maryland Washington Zone 13 N/A
301-420 Verizon Maryland Washington Zone 5 N/A
301-421 Verizon Maryland Ashton N/A
301-422 Verizon Maryland Washington Zone 4 N/A
301-423 Verizon Maryland Washington Zone 5 N/A
301-424 Verizon Maryland Washington Zone 10 N/A
301-425 Verizon Maryland Washington Zone 13 N/A
301-426 Verizon Maryland Washington Zone 13 N/A
301-427 Verizon Maryland Washington Zone 3 N/A
301-428 Verizon Maryland Washington Zone 10 N/A
301-429 Verizon Maryland Washington Zone 4 N/A
301-430 Verizon Maryland Washington Zone 14 N/A
301-431 Verizon Maryland Washington Zone 3 N/A
301-432 Verizon Maryland Keedysville N/A
301-433 Verizon Maryland Washington Zone 5 N/A
301-434 Verizon Maryland Washington Zone 3 N/A
301-435 Verizon Maryland Washington Zone 2 N/A
301-436 Verizon Maryland Washington Zone 4 N/A
301-437 Omnipoint Communications Cap Operations Washington Zone 3 N/A
301-438 Verizon Maryland Washington Zone 12 N/A
301-439 Verizon Maryland Washington Zone 3 N/A
301-440 MetroPCS Washington Zone 5 N/A
301-441 Verizon Maryland Washington Zone 13 N/A
301-442 Omnipoint Communications Cap Operations Washington Zone 3 N/A
301-443 Verizon Maryland Washington Zone 11 N/A
301-444 Verizon Maryland Washington Zone 10 N/A
301-445 Verizon Maryland Washington Zone 3 N/A
301-446 Verizon Maryland Washington Zone 13 N/A
301-447 Verizon Maryland Emmitsburg N/A
301-448 Comcast IP Phone Washington Zone 3 N/A
301-449 Verizon Maryland Washington Zone 5 N/A
301-450 New Cingular Wireless PCS Washington Zone 3 7/15/2022
301-451 Verizon Maryland Washington Zone 2 N/A
301-452 Cellco Partnership Washington Zone 3 N/A
301-453 Verizon Maryland Kitzmiller N/A
301-454 Verizon Maryland Washington Zone 4 N/A
301-455 Omnipoint Communications Cap Operations Washington Zone 3 N/A
301-456 Comcast IP Phone Washington Zone 5 N/A
301-457 Verizon Maryland Washington Zone 3 N/A
301-458 Teleport Communications America Washington Zone 4 N/A
301-459 Verizon Maryland Washington Zone 4 N/A
301-460 Verizon Maryland Washington Zone 11 N/A
301-461 Cellco Partnership Washington Zone 10 N/A
301-462 MetroPCS Myersville N/A
301-463 Verizon Maryland Lonaconing N/A
301-464 Verizon Maryland Washington Zone 14 N/A
301-465 Omnipoint Communications Cap Operations Myersville N/A
301-466 Cellco Partnership Washington Zone 3 N/A
301-467 Cellco Partnership Washington Zone 3 N/A
301-468 Verizon Maryland Washington Zone 11 N/A
301-469 Verizon Maryland Washington Zone 2 N/A
301-470 Verizon Maryland Washington Zone 14 N/A
301-471 Cellco Partnership Frederick N/A
301-472 Verizon Maryland Mechanicsville N/A
301-473 Verizon Maryland Frederick N/A
301-474 Verizon Maryland Washington Zone 13 N/A
301-475 Verizon Maryland Leonardtown N/A
301-476 Verizon Maryland Ashton N/A
301-477 Comcast IP Phone Washington Zone 13 N/A
301-478 Verizon Maryland Flintstone N/A
301-479 MCIMetro Access Transmission Services Washington Zone 13 N/A
301-480 Verizon Maryland Washington Zone 2 N/A
301-481 Cellco Partnership Leonardtown N/A
301-482 Verizon Maryland Damascus N/A
301-483 Verizon Maryland Laurel N/A
301-484 Comcast IP Phone Washington Zone 4 N/A
301-485 Comcast IP Phone Washington Zone 6 N/A
301-486 Verizon Maryland Washington Zone 13 N/A
301-487 Verizon Maryland Myersville N/A
301-488 Verizon Maryland Washington Zone 13 N/A
301-489 Verizon Maryland Washington Zone 13 N/A
301-490 Verizon Maryland Laurel N/A
301-491 Uscoc Of Cumberland Hagerstown N/A
301-492 Verizon Maryland Washington Zone 2 N/A
301-493 Verizon Maryland Washington Zone 2 N/A
301-494 Verizon Maryland Washington Zone 15 N/A
301-495 Verizon Maryland Washington Zone 3 N/A
301-496 Verizon Maryland Washington Zone 2 N/A
301-497 Verizon Maryland Laurel N/A
301-498 Verizon Maryland Laurel N/A
301-499 Verizon Maryland Washington Zone 5 N/A
301-500-XXXX --- 301-599-XXXX
NPANXX Carrier1 Area Served2 Date3
301-500 MCIMetro Access Transmission Services Washington Zone 2 N/A
301-501 New Cingular Wireless PCS Oakland N/A
301-502 Cellco Partnership Washington Zone 3 N/A
301-503 New Cingular Wireless PCS Washington Zone 2 N/A
301-504 Verizon Maryland Washington Zone 3 N/A
301-505 Verizon Maryland Washington Zone 6 N/A
301-506 USA Mobility Wireless Washington Zone 13 N/A
301-507 Verizon Maryland Washington Zone 13 N/A
301-508 New Cingular Wireless PCS Myersville N/A
301-509 Cellco Partnership Washington Zone 3 N/A
301-510 USA Mobility Wireless Washington Zone 13 N/A
301-512 Cellco Partnership Washington Zone 3 N/A
301-513 Verizon Maryland Washington Zone 13 N/A
301-514 Cellco Partnership Frederick N/A
301-515 Verizon Maryland Gaithersburg N/A
301-516 Verizon Maryland Washington Zone 5 N/A
301-517 Verizon Maryland Washington Zone 10 N/A
301-518 Cellco Partnership Washington Zone 3 N/A
301-519 Verizon Maryland Gaithersburg N/A
301-520 Cellco Partnership Washington Zone 3 N/A
301-521 Verizon Maryland Washington Zone 6 N/A
301-522 Verizon Maryland Washington Zone 11 N/A
301-523 Omnipoint Communications Cap Operations Washington Zone 3 N/A
301-524 Omnipoint Communications Cap Operations Frederick N/A
301-525 Quantum Telecommunications Gaithersburg 10/16/2003
301-526 New Cingular Wireless PCS Washington Zone 3 N/A
301-527 Verizon Maryland Gaithersburg N/A
301-528 Verizon Maryland Gaithersburg N/A
301-529 New Cingular Wireless PCS Washington Zone 10 N/A
301-530 Verizon Maryland Washington Zone 2 N/A
301-531 Starpower Communications Washington Zone 4 N/A
301-532 Omnipoint Communications Cap Operations Laurel 2/20/2015
301-533 Verizon Maryland Oakland N/A
301-534 Ymax Communications Corp. Indian Head 11/15/2006
301-535 New Cingular Wireless PCS Waldorf N/A
301-536 MetroPCS Leonardtown N/A
301-537 Omnipoint Communications Cap Operations Washington Zone 3 N/A
301-538 New Cingular Wireless PCS Washington Zone 2 N/A
301-539 Teleport Communications America La Plata N/A
301-540 Verizon Maryland Gaithersburg N/A
301-541 Teleport Communications America Washington Zone 5 N/A
301-542 Teleport Communications America Waldorf N/A
301-543 Teleport Communications America Laurel N/A
301-544 Verizon Maryland Washington Zone 10 N/A
301-545 Verizon Maryland Washington Zone 10 N/A
301-546 Verizon Maryland Washington Zone 4 4/7/2014
301-547 Teleport Communications America Washington Zone 2 N/A
301-548 Verizon Maryland Washington Zone 10 N/A
301-549 Verizon Maryland Ashton N/A
301-550 New Cingular Wireless PCS Washington Zone 10 7/26/2022
301-551 Baltimore-Washington Telephone (bwt) Washington Zone 3 N/A
301-552 Verizon Maryland Washington Zone 13 N/A
301-553 USA Mobility Wireless Waldorf N/A
301-554 USA Mobility Wireless Washington Zone 2 N/A
301-556 Teleport Communications America Gaithersburg N/A
301-557 Level 3 Communications Washington Zone 3 9/6/2011
301-558 Omnipoint Communications Cap Operations Washington Zone 13 N/A
301-559 Verizon Maryland Washington Zone 4 N/A
301-560 Paetec Itel Washington Zone 4 N/A
301-561 Baltimore-Washington Telephone (bwt) Washington Zone 3 N/A
301-562 Verizon Maryland Washington Zone 3 N/A
301-563 Verizon Maryland Washington Zone 3 N/A
301-564 Verizon Maryland Washington Zone 2 N/A
301-565 Verizon Maryland Washington Zone 3 N/A
301-566 Verizon Maryland Washington Zone 13 N/A
301-567 Verizon Maryland Washington Zone 6 N/A
301-568 Verizon Maryland Washington Zone 5 N/A
301-569 Cellco Partnership Gaithersburg N/A
301-570 Verizon Maryland Ashton N/A
301-571 Verizon Maryland Washington Zone 2 N/A
301-572 Verizon Maryland Washington Zone 3 N/A
301-573 MetroPCS Hagerstown N/A
301-574 Verizon Maryland Washington Zone 15 N/A
301-575 Paetec Itel Laurel N/A
301-576 Paetec Itel Washington Zone 3 N/A
301-577 Verizon Maryland Washington Zone 4 N/A
301-578 Verizon Maryland Washington Zone 3 N/A
301-579 Verizon Maryland Brandywine N/A
301-580 Cellco Partnership Washington Zone 3 N/A
301-581 Verizon Maryland Washington Zone 2 N/A
301-582 Verizon Maryland Hagerstown N/A
301-583 Verizon Maryland Washington Zone 4 N/A
301-584 Baltimore-Washington Telephone (bwt) Washington Zone 12 N/A
301-585 Verizon Maryland Washington Zone 3 N/A
301-586 Verizon Maryland Washington Zone 3 N/A
301-587 Verizon Maryland Washington Zone 3 N/A
301-588 Verizon Maryland Washington Zone 3 N/A
301-589 Verizon Maryland Washington Zone 3 N/A
301-590 Verizon Maryland Washington Zone 10 N/A
301-591 Paetec Itel Gaithersburg N/A
301-592 Verizon Maryland Washington Zone 3 N/A
301-593 Verizon Maryland Washington Zone 3 N/A
301-594 Verizon Maryland Washington Zone 2 N/A
301-595 Verizon Maryland Washington Zone 13 N/A
301-596 Verizon Maryland Laurel N/A
301-597 New Cingular Wireless PCS Hancock N/A
301-598 Verizon Maryland Washington Zone 12 N/A
301-599 Verizon Maryland Washington Zone 5 N/A
301-600-XXXX --- 301-699-XXXX
NPANXX Carrier1 Area Served2 Date3
301-600 Verizon Maryland Frederick 7/6/2006
301-601 Verizon Maryland Washington Zone 10 N/A
301-602 Cellco Partnership Washington Zone 3 N/A
301-603 Verizon Maryland Washington Zone 11 N/A
301-604 Verizon Maryland Laurel N/A
301-605 Verizon Maryland Washington Zone 10 N/A
301-606 Cellco Partnership Frederick N/A
301-607 Verizon Maryland Damascus N/A
301-608 Verizon Maryland Washington Zone 3 N/A
301-609 Verizon Maryland Waldorf N/A
301-610 Verizon Maryland Washington Zone 10 N/A
301-612 Teleport Communications America Washington Zone 14 10/11/2012
301-613 Omnipoint Communications Cap Operations Washington Zone 3 N/A
301-614 Verizon Maryland Washington Zone 13 N/A
301-615 Bandwidth.com Clec Washington Zone 13 N/A
301-616 Uscoc Of Cumberland Oakland N/A
301-617 Verizon Maryland Laurel N/A
301-618 Verizon Maryland Washington Zone 4 N/A
301-619 Verizon Maryland Frederick N/A
301-620 Verizon Maryland Frederick N/A
301-621 Verizon Maryland Washington Zone 14 N/A
301-622 Verizon Maryland Washington Zone 3 N/A
301-623 Teleport Communications America Washington Zone 13 N/A
301-624 Verizon Maryland Frederick N/A
301-625 Verizon Maryland Washington Zone 3 N/A
301-626 Verizon Maryland Washington Zone 3 N/A
301-627 Verizon Maryland Washington Zone 15 N/A
301-628 Teleport Communications America Washington Zone 3 N/A
301-629 Verizon Maryland Washington Zone 14 N/A
301-630 Verizon Maryland Washington Zone 6 N/A
301-631 Verizon Maryland Frederick N/A
301-632 Verizon Maryland Waldorf N/A
301-633 New Cingular Wireless PCS Washington Zone 2 N/A
301-634 Teleport Communications America Washington Zone 2 N/A
301-635 Bandwidth.com Clec Washington Zone 5 7/27/2022
301-636 Verizon Maryland Washington Zone 5 N/A
301-637 Level 3 Communications Washington Zone 10 N/A
301-638 Verizon Maryland Waldorf N/A
301-639 Cellco Partnership Frederick N/A
301-640 Verizon Maryland Washington Zone 10 N/A
301-641 Cellco Partnership Washington Zone 3 N/A
301-642 New Cingular Wireless PCS Washington Zone 2 N/A
301-643 Cellco Partnership Waldorf N/A
301-644 Verizon Maryland Frederick N/A
301-645 Verizon Maryland Waldorf N/A
301-646 New Cingular Wireless PCS Washington Zone 2 N/A
301-647 American Messaging Services Washington Zone 13 N/A
301-648 New Cingular Wireless PCS Washington Zone 2 N/A
301-649 Verizon Maryland Washington Zone 11 N/A
301-650 Verizon Maryland Washington Zone 3 N/A
301-651 Cellco Partnership Washington Zone 3 N/A
301-652 Verizon Maryland Washington Zone 2 N/A
301-653 New Cingular Wireless PCS Waldorf N/A
301-654 Verizon Maryland Washington Zone 2 N/A
301-655 New Cingular Wireless PCS Washington Zone 2 N/A
301-656 Verizon Maryland Washington Zone 2 N/A
301-657 Verizon Maryland Washington Zone 2 N/A
301-658 Teleport Communications America Ashton N/A
301-659 New Cingular Wireless PCS Waldorf N/A
301-660 New Cingular Wireless PCS Keedysville 3/19/2004
301-661 New Cingular Wireless PCS Washington Zone 2 N/A
301-662 Verizon Maryland Frederick N/A
301-663 Verizon Maryland Frederick N/A
301-664 Verizon Maryland Washington Zone 2 N/A
301-665 Verizon Maryland Hagerstown N/A
301-666 Teleport Communications America Washington Zone 14 N/A
301-667 New Cingular Wireless PCS Myersville N/A
301-668 Verizon Maryland Frederick N/A
301-669 Verizon Maryland Washington Zone 5 N/A
301-670 Verizon Maryland Washington Zone 10 N/A
301-671 Bandwidth.com Clec Hagerstown N/A
301-672 Omnipoint Communications Cap Operations Lexington Park-Great Mills N/A
301-673 New Cingular Wireless PCS Frederick N/A
301-674 Omnipoint Communications Cap Operations Washington Zone 2 N/A
301-675 Omnipoint Communications Cap Operations Washington Zone 3 N/A
301-676 New Cingular Wireless PCS Frederick N/A
301-677 Teleport Communications America Washington Zone 14 N/A
301-678 Verizon Maryland Hancock N/A
301-679 Teleport Communications America Washington Zone 12 N/A
301-680 Verizon Maryland Washington Zone 3 N/A
301-681 Verizon Maryland Washington Zone 3 N/A
301-682 Verizon Maryland Frederick N/A
301-683 Teleport Communications America Washington Zone 4 N/A
301-684 Teleport Communications America Indian Head N/A
301-685 Teleport Communications America Damascus N/A
301-686 Verizon Maryland Washington Zone 6 N/A
301-687 Verizon Maryland Frostburg N/A
301-688 Verizon Maryland Washington Zone 13 N/A
301-689 Verizon Maryland Frostburg N/A
301-690 Idt America Leonardtown 5/23/2007
301-691 Teleport Communications America Poolesville N/A
301-692 Teleport Communications America Washington Zone 11 N/A
301-693 Omnipoint Communications Cap Operations Frederick N/A
301-694 Verizon Maryland Frederick N/A
301-695 Verizon Maryland Frederick N/A
301-696 Verizon Maryland Frederick N/A
301-697 New Cingular Wireless PCS Cumberland N/A
301-698 Verizon Maryland Frederick N/A
301-699 Verizon Maryland Washington Zone 4 N/A
301-701-XXXX --- 301-799-XXXX
NPANXX Carrier1 Area Served2 Date3
301-701 Bandwidth.com Clec Washington Zone 13 N/A
301-702 Verizon Maryland Washington Zone 5 N/A
301-703 Level 3 Communications Mount Airy 8/29/2002
301-704 Cellco Partnership Washington Zone 3 N/A
301-705 Verizon Maryland Waldorf N/A
301-706 Cellco Partnership Washington Zone 3 N/A
301-707 Uscoc Of Cumberland Cumberland N/A
301-708 Cellco Partnership Laurel N/A
301-709 Csc Wireless Cumberland 5/28/2019
301-710 Level 3 Communications Waldorf 12/30/2005
301-712 MCIMetro Access Transmission Services Frederick N/A
301-713 Verizon Maryland Washington Zone 3 N/A
301-714 Verizon Maryland Hagerstown N/A
301-715 Teleport Communications America Washington Zone 15 N/A
301-716 Verizon Maryland Washington Zone 13 N/A
301-717 Cellco Partnership Washington Zone 3 N/A
301-718 Verizon Maryland Washington Zone 2 N/A
301-719 Teleport Communications America Washington Zone 16 N/A
301-720 Teleport Communications America Brandywine N/A
301-721 Verizon Maryland Washington Zone 10 N/A
301-722 Verizon Maryland Cumberland N/A
301-723 Verizon Maryland Cumberland N/A
301-724 Verizon Maryland Cumberland N/A
301-725 Verizon Maryland Laurel N/A
301-726 MCIMetro Access Transmission Services Kitzmiller 02/07/2023
301-727 Baltimore-Washington Telephone (bwt) Washington Zone 5 N/A
301-728 Omnipoint Communications Cap Operations Washington Zone 3 N/A
301-729 Verizon Maryland Cumberland N/A
301-730 New Cingular Wireless PCS Myersville N/A
301-731 Verizon Maryland Washington Zone 4 N/A
301-732 MetroPCS Frederick N/A
301-733 Verizon Maryland Hagerstown N/A
301-734 Verizon Maryland Washington Zone 3 N/A
301-735 Verizon Maryland Washington Zone 5 N/A
301-736 Verizon Maryland Washington Zone 5 N/A
301-737 Verizon Maryland Lexington Park-Great Mills N/A
301-738 Verizon Maryland Washington Zone 10 N/A
301-739 Verizon Maryland Hagerstown N/A
301-740 Verizon Maryland Gaithersburg 4/22/2004
301-741 Level 3 Communications Laurel N/A
301-742 New Cingular Wireless PCS Washington Zone 2 N/A
301-743 Verizon Maryland Indian Head N/A
301-744 Verizon Maryland Indian Head N/A
301-745 Verizon Maryland Hagerstown N/A
301-746 Verizon Maryland Friendsville N/A
301-747 Teleport Communications America Washington Zone 6 N/A
301-748 MetroPCS Frederick N/A
301-749 Verizon Maryland Washington Zone 6 N/A
301-750 Core Communications Friendsville 3/18/2004
301-751 Cellco Partnership Waldorf N/A
301-752 Cellco Partnership Waldorf N/A
301-753 Verizon Maryland Washington Zone 6 N/A
301-754 Verizon Maryland Washington Zone 3 N/A
301-755 MCIMetro Access Transmission Services Washington Zone 3 N/A
301-756 Level 3 Telecom Of Maryland Washington Zone 14 N/A
301-757 Verizon Maryland Lexington Park-Great Mills N/A
301-758 Cellco Partnership Washington Zone 3 N/A
301-759 Verizon Maryland Cumberland N/A
301-760 Level 3 Communications Washington Zone 2 2/27/2002
301-761 Level 3 Communications Washington Zone 11 2/27/2002
301-762 Verizon Maryland Washington Zone 10 N/A
301-763 Verizon Maryland Washington Zone 5 N/A
301-764 Verizon Maryland Waldorf N/A
301-765 Verizon Maryland Washington Zone 10 N/A
301-766 Verizon Maryland Hagerstown N/A
301-767 Verizon Maryland Washington Zone 2 N/A
301-768 Level 3 Communications Washington Zone 3 2/27/2002
301-769 Verizon Maryland Leonardtown N/A
301-770 Verizon Maryland Washington Zone 11 N/A
301-771 Verizon Maryland Washington Zone 2 N/A
301-772 Verizon Maryland Washington Zone 4 N/A
301-773 Verizon Maryland Washington Zone 4 N/A
301-774 Verizon Maryland Ashton N/A
301-775 Cellco Partnership Washington Zone 3 N/A
301-776 Verizon Maryland Laurel N/A
301-777 Verizon Maryland Cumberland N/A
301-778 MCIMetro Access Transmission Services Washington Zone 5 N/A
301-779 Verizon Maryland Washington Zone 4 N/A
301-780 Verizon Maryland Washington Zone 15 N/A
301-781 Onvoy Spectrum Frostburg N/A
301-782 Verizon Maryland Brandywine N/A
301-783 Bandwidth.com Clec Cumberland N/A
301-784 Verizon Maryland Cumberland N/A
301-785 Cellco Partnership Washington Zone 3 N/A
301-786 Verizon Maryland Mccoole N/A
301-787 Cellco Partnership Washington Zone 3 N/A
301-788 Cellco Partnership Frederick N/A
301-789 Core Communications Washington Zone 4 8/13/2002
301-790 Verizon Maryland Hagerstown N/A
301-791 Verizon Maryland Hagerstown N/A
301-792 Omnipoint Communications Cap Operations Washington Zone 3 N/A
301-793 Omnipoint Communications Cap Operations Washington Zone 3 N/A
301-794 Verizon Maryland Washington Zone 14 N/A
301-795 MCIMetro Access Transmission Services Washington Zone 10 N/A
301-796 Verizon Maryland Washington Zone 13 6/30/2003
301-797 Verizon Maryland Hagerstown N/A
301-798 Verizon Maryland Damascus N/A
301-799 Core Communications Keedysville 3/18/2004
301-800-XXXX --- 301-899-XXXX
NPANXX Carrier1 Area Served2 Date3
301-800 Omnipoint Communications Cap Operations Hagerstown N/A
301-801 Cellco Partnership Washington Zone 3 N/A
301-802 Cellco Partnership Washington Zone 3 N/A
301-803 Verizon Maryland Washington Zone 2 N/A
301-804 MCIMetro Access Transmission Services Ashton N/A
301-805 Verizon Maryland Washington Zone 14 N/A
301-806 Omnipoint Communications Cap Operations Washington Zone 3 N/A
301-807 Cellco Partnership Washington Zone 3 N/A
301-808 Verizon Maryland Washington Zone 5 N/A
301-809 Verizon Maryland Washington Zone 14 N/A
301-810 Onvoy Spectrum Buckeyestown N/A
301-812 Verizon Maryland Washington Zone 15 N/A
301-813 Baltimore-Washington Telephone (bwt) Washington Zone 2 N/A
301-814 New Cingular Wireless PCS Washington Zone 2 N/A
301-815 Verizon Maryland Frederick N/A
301-816 Verizon Maryland Washington Zone 11 N/A
301-817 Verizon Maryland Washington Zone 5 N/A
301-818 Bandwidth.com Clec Waldorf N/A
301-819 Verizon Maryland Washington Zone 3 N/A
301-820 Teleport Communications America Gaithersburg N/A
301-821 Teleport Communications America Laurel N/A
301-822 MCIMetro Access Transmission Services Washington Zone 11 N/A
301-823 Teleport Communications America Washington Zone 13 N/A
301-824 Verizon Maryland Smithsburg N/A
301-825 AT&T Washington Zone 10 N/A
301-826 Verizon Maryland Lexington Park-Great Mills N/A
301-827 Verizon Maryland Washington Zone 2 N/A
301-828 Teleport Communications America Washington Zone 2 N/A
301-829 Verizon Maryland Mount Airy N/A
301-830 Teleport Communications America Washington Zone 3 N/A
301-831 Verizon Maryland Damascus N/A
301-832 Teleport Communications America Washington Zone 4 N/A
301-833 Teleport Communications America Washington Zone 14 N/A
301-834 Verizon Maryland Brunswick N/A
301-835 Vonage America Frederick 11/27/2018
301-836 Verizon Maryland Washington Zone 5 N/A
301-837 MCIMetro Access Transmission Services Washington Zone 13 N/A
301-838 Verizon Maryland Washington Zone 10 N/A
301-839 Verizon Maryland Washington Zone 6 N/A
301-840 Verizon Maryland Washington Zone 10 N/A
301-841 MCIMetro Access Transmission Services Washington Zone 2 N/A
301-842 Verizon Maryland Clear Spg N/A
301-843 Verizon Maryland Washington Zone 6 N/A
301-844 Omnipoint Communications Cap Operations Washington Zone 3 10/4/2011
301-845 Verizon Maryland Walkersville N/A
301-846 Verizon Maryland Frederick N/A
301-847 Verizon Maryland Washington Zone 12 N/A
301-848 Cellco Partnership Waldorf N/A
301-849 Bandwidth.com Clec Oakland N/A
301-850 Level 3 Communications Washington Zone 14 N/A
301-851 Verizon Maryland Washington Zone 4 N/A
301-852 Verizon Maryland Washington Zone 4 N/A
301-853 Verizon Maryland Washington Zone 4 N/A
301-854 Verizon Maryland Ashton N/A
301-855 Verizon Maryland Washington Zone 15 N/A
301-856 Verizon Maryland Washington Zone 16 N/A
301-857 Core Communications Clear Spg 7/12/2002
301-858 Verizon Maryland Washington Zone 14 N/A
301-859 Level 3 Communications Oakland 1/9/2002
301-860 Verizon Maryland Washington Zone 14 N/A
301-861 Level 3 Communications Waldorf N/A
301-862 Verizon Maryland Lexington Park-Great Mills N/A
301-863 Verizon Maryland Lexington Park-Great Mills N/A
301-864 Verizon Maryland Washington Zone 4 N/A
301-865 Verizon Maryland New Market N/A
301-866 Verizon Maryland Lexington Park-Great Mills N/A
301-867 MCIMetro Access Transmission Services Washington Zone 14 N/A
301-868 Verizon Maryland Washington Zone 16 N/A
301-869 Verizon Maryland Gaithersburg N/A
301-870 Verizon Maryland Washington Zone 6 N/A
301-871 Verizon Maryland Washington Zone 11 N/A
301-872 Verizon Maryland Ridge N/A
301-873 Cellco Partnership Washington Zone 3 N/A
301-874 Verizon Maryland Buckeyestown N/A
301-875 Cellco Partnership Laurel N/A
301-876 Level 3 Communications Cumberland 5/2/2002
301-877 Verizon Maryland Washington Zone 16 N/A
301-878 MCIMetro Access Transmission Services Baltimore N/A
301-879 Verizon Maryland Washington Zone 12 N/A
301-880 Level 3 Communications Lexington Park-Great Mills N/A
301-881 Verizon Maryland Washington Zone 11 N/A
301-882 Core Communications New Market 3/18/2004
301-883 Verizon Maryland Washington Zone 5 N/A
301-884 Verizon Maryland Mechanicsville N/A
301-885 Verizon Maryland Waldorf N/A
301-886 Bandwidth.com Clec Washington Zone 13 N/A
301-887 Verizon Maryland Washington Zone 4 N/A
301-888 Verizon Maryland Washington Zone 16 N/A
301-889 Verizon Maryland Washington Zone 14 N/A
301-890 Verizon Maryland Washington Zone 12 N/A
301-891 Verizon Maryland Washington Zone 3 N/A
301-892 Verizon Maryland Washington Zone 4 3/11/2005
301-893 Verizon Maryland Washington Zone 6 N/A
301-894 Verizon Maryland Washington Zone 6 N/A
301-895 Verizon Maryland Grantsville N/A
301-896 Verizon Maryland Washington Zone 2 N/A
301-897 Verizon Maryland Washington Zone 2 N/A
301-898 Verizon Maryland Frederick N/A
301-899 Verizon Maryland Washington Zone 5 N/A
301-900-XXXX --- 301-998-XXXX
NPANXX Carrier1 Area Served2 Date3
301-900 Onvoy Washington Zone 2 2/18/2015
301-901 Verizon Maryland Washington Zone 13 N/A
301-902 Verizon Maryland Washington Zone 13 N/A
301-903 Verizon Maryland Washington Zone 10 N/A
301-904 Cellco Partnership Leonardtown N/A
301-905 Verizon Maryland Washington Zone 3 N/A
301-906 New Cingular Wireless PCS Washington Zone 2 N/A
301-907 Verizon Maryland Washington Zone 2 N/A
301-908 Cellco Partnership Washington Zone 3 N/A
301-909 MCIMetro Access Transmission Services Washington Zone 5 N/A
301-910 New Cingular Wireless PCS Washington Zone 2 N/A
301-912 Verizon Maryland Washington Zone 14 N/A
301-913 Verizon Maryland Washington Zone 2 N/A
301-914 Mountain Communications Oakland 12/27/2012
301-915 Starpower Communications Washington Zone 2 N/A
301-916 Verizon Maryland Gaithersburg N/A
301-917 Starpower Communications Washington Zone 10 N/A
301-918 Verizon Maryland Washington Zone 4 N/A
301-919 New Cingular Wireless PCS Washington Zone 2 N/A
301-920 Starpower Communications Washington Zone 3 N/A
301-921 Verizon Maryland Washington Zone 10 N/A
301-922 Cellco Partnership Washington Zone 3 N/A
301-923 Bandwidth.com Clec Washington Zone 13 N/A
301-924 Verizon Maryland Washington Zone 12 N/A
301-925 Verizon Maryland Washington Zone 5 N/A
301-926 Verizon Maryland Gaithersburg N/A
301-927 Verizon Maryland Washington Zone 4 N/A
301-928 Cellco Partnership Washington Zone 3 N/A
301-929 Verizon Maryland Washington Zone 11 N/A
301-930 Verizon Maryland Washington Zone 3 N/A
301-931 Verizon Maryland Washington Zone 13 N/A
301-932 Verizon Maryland Waldorf N/A
301-933 Verizon Maryland Washington Zone 11 N/A
301-934 Verizon Maryland La Plata N/A
301-935 Verizon Maryland Washington Zone 13 N/A
301-936 Telnyx Hagerstown 6/2/2017
301-937 Verizon Maryland Washington Zone 13 N/A
301-938 Cellco Partnership Washington Zone 3 N/A
301-939 Verizon Maryland Washington Zone 13 N/A
301-940 Verizon Maryland Washington Zone 2 N/A
301-941 Verizon Maryland Washington Zone 2 N/A
301-942 Verizon Maryland Washington Zone 11 N/A
301-943 Cellco Partnership Washington Zone 3 N/A
301-944 MCIMetro Access Transmission Services Gaithersburg N/A
301-945 MCIMetro Access Transmission Services Washington Zone 11 N/A
301-946 Verizon Maryland Washington Zone 11 N/A
301-947 Verizon Maryland Gaithersburg N/A
301-948 Verizon Maryland Washington Zone 10 N/A
301-949 Verizon Maryland Washington Zone 11 N/A
301-951 Verizon Maryland Washington Zone 2 N/A
301-952 Verizon Maryland Washington Zone 15 N/A
301-953 Verizon Maryland Washington Zone 13 N/A
301-955 MCIMetro Access Transmission Services Washington Zone 4 N/A
301-956 Verizon Maryland Gaithersburg 5/22/2002
301-957 MCIMetro Access Transmission Services Laurel N/A
301-960 MCIMetro Access Transmission Services Washington Zone 3 N/A
301-961 Verizon Maryland Washington Zone 2 N/A
301-962 Verizon Maryland Washington Zone 11 N/A
301-963 Verizon Maryland Gaithersburg N/A
301-964 New Cingular Wireless PCS Myersville N/A
301-965 MCIMetro Access Transmission Services Washington Zone 6 N/A
301-966 MCIMetro Access Transmission Services Washington Zone 12 N/A
301-967 Verizon Maryland Washington Zone 5 N/A
301-968 MCIMetro Access Transmission Services Washington Zone 2 N/A
301-969 Comcast IP Phone Brunswick 3/6/2007
301-970 Verizon Maryland Washington Zone 14 N/A
301-971 Starpower Communications Washington Zone 6 N/A
301-972 Verizon Maryland Gaithersburg N/A
301-973 Bandwidth.com Clec Washington Zone 14 N/A
301-974 Starpower Communications Laurel N/A
301-975 Verizon Maryland Washington Zone 10 N/A
301-977 Verizon Maryland Gaithersburg N/A
301-978 Verizon Maryland Washington Zone 10 N/A
301-979 Omnipoint Communications Cap Operations Washington Zone 10 N/A
301-980 Cellco Partnership Washington Zone 3 N/A
301-981 Level 3 Telecom Of Maryland Washington Zone 5 N/A
301-982 Verizon Maryland Washington Zone 13 N/A
301-983 Verizon Maryland Washington Zone 10 N/A
301-984 Verizon Maryland Washington Zone 11 N/A
301-985 Verizon Maryland Washington Zone 4 N/A
301-986 Verizon Maryland Washington Zone 2 N/A
301-987 Verizon Maryland Gaithersburg N/A
301-988 Uscoc Of Cumberland Hagerstown N/A
301-989 Verizon Maryland Washington Zone 12 N/A
301-990 Verizon Maryland Gaithersburg N/A
301-991 Omnipoint Communications Cap Operations Hagerstown N/A
301-992 MetroPCS Hagerstown N/A
301-993 Verizon Maryland Washington Zone 13 N/A
301-994 Verizon Maryland Lexington Park-Great Mills N/A
301-995 Verizon Maryland Lexington Park-Great Mills N/A
301-996 Omnipoint Communications Cap Operations Washington Zone 3 N/A
301-997 Verizon Maryland Leonardtown N/A
301-998 Verizon Maryland Washington Zone 11 N/A
  1. NPA-NXX assigned carrier; with Number Pooling thousand block numbers are often assigned to other carriers as well; moreover, phone numbers can be ported between service providers
  2. For 'Area served' we list the rate center. In the North American Numbering Plan a rate center is a geographic area used to determine local calling boundaries for billing purposes. Its name is generally a locality, often not the only one served by an NPA-NXX combination.
  3. Assignment date. N/A - mostly central office codes assigned before 2001.
  4. NXX prefixes last updated: November 22, 2025

Cities in area code 301

City1 County Time Zone1
Abell St Marys E
Accident Garrett E
Accokeek Prince George's E
Adamstown Frederick E
Andrews Afb Prince George's E
Aquasco Prince George's E
Ashton Montgomery E
Avenue St Marys E
Barnesville Montgomery E
Barton Allegany E
Beallsville Montgomery E
Bel Alton Charles E
Beltsville Prince George's E
Benedict Charles E
Bethesda Montgomery E
Big Pool Washington E
Bittinger Garrett E
Bladensburg Prince George's E
Bloomington Garrett E
Boonsboro Washington E
Bowie Prince George's E
Boyds Montgomery E
Braddock Heights Frederick E
Brandywine Prince George's E
Brentwood Prince George's E
Brinklow Montgomery E
Brookeville Montgomery E
Brownsville Washington E
Brunswick Frederick E
Bryans Road Charles E
Bryantown Charles E
Buckeystown Frederick E
Burkittsville Frederick E
Burtonsville Montgomery E
Bushwood St Marys E
Cabin John Montgomery E
California St Marys E
Callaway St Marys E
Capitol Heights Prince George's E
Cascade Washington E
Cavetown Washington E
Chaptico St Marys E
Charlotte Hall St Marys E
Cheltenham Prince George's E
Chevy Chase Montgomery E
Chewsville Washington E
Clarksburg Montgomery E
Clear Spring Washington E
Clements St Marys E
Clinton Prince George's E
Cobb Island Charles E
College Park Prince George's E
Coltons Point St Marys E
Compton St Marys E
Corriganville Allegany E
Cumberland Allegany E
Damascus Montgomery E
Dameron St Marys E
Derwood Montgomery E
Dickerson Montgomery E
District Heights Prince George's E
Drayden St Marys E
Eckhart Mines Allegany E
Ellerslie Allegany E
Emmitsburg Frederick E
Fairplay Washington E
Faulkner Charles E
Flintstone Allegany E
Fort Washington Prince George's E
Frederick Frederick E
Friendship Anne Arundel E
Friendsville Garrett E
Frostburg Allegany E
Funkstown Washington E
Gaithersburg Montgomery E
Garrett Park Montgomery E
Germantown Montgomery E
Glen Echo Montgomery E
Glenn Dale Prince George's E
Grantsville Garrett E
Great Mills St Marys E
Greenbelt Prince George's E
Hagerstown Washington E
Hancock Washington E
Helen St Marys E
Highland Howard E
Hollywood St Marys E
Hughesville Charles E
Hyattsville Prince George's E
Ijamsville Frederick E
Indian Head Charles E
Ironsides Charles E
Issue Charles E
Jefferson Frederick E
Keedysville Washington E
Kensington Montgomery E
Kitzmiller Garrett E
Knoxville Frederick E
La Plata Charles E
Ladiesburg Frederick E
Lanham Prince George's E
Laurel Anne Arundel E
Leonardtown St Marys E
Lexington Park St Marys E
Libertytown Frederick E
Little Orleans Allegany E
Lonaconing Allegany E
Loveville St Marys E
Luke Allegany E
Marbury Charles E
Maugansville Washington E
Mc Henry Garrett E
Mechanicsville St Marys E
Middletown Frederick E
Midland Allegany E
Midlothian Allegany E
Monrovia Frederick E
Montgomery Village Montgomery E
Morganza St Marys E
Mount Airy Frederick E
Mount Rainier Prince George's E
Mount Savage Allegany E
Mount Victoria Charles E
Myersville Frederick E
Nanjemoy Charles E
National Harbor Prince George's E
New Market Frederick E
New Midway Frederick E
Newburg Charles E
Oakland Garrett E
Oldtown Allegany E
Olney Montgomery E
Owings Calvert E
Oxon Hill Prince George's E
Park Hall St Marys E
Patuxent River St Marys E
Piney Point St Marys E
Pinto Allegany E
Point Of Rocks Frederick E
Pomfret Charles E
Poolesville Montgomery E
Port Tobacco Charles E
Potomac Montgomery E
Rawlings Allegany E
Ridge St Marys E
Riverdale Prince George's E
Rock Point Charles E
Rockville Montgomery E
Rocky Ridge Frederick E
Rohrersville Washington E
Sabillasville Frederick E
Sandy Spring Montgomery E
Scotland St Marys E
Sharpsburg Washington E
Silver Spring Montgomery E
Smithsburg Washington E
Southern MD Facility Prince George's E
Spencerville Montgomery E
Spring Gap Allegany E
St Inigoes St Marys E
St James Washington E
St Marys City St Marys E
Suburb Maryland Fac Montgomery E
Suitland Prince George's E
Swanton Garrett E
Takoma Park Montgomery E
Tall Timbers St Marys E
Temple Hills Prince George's E
Thurmont Frederick E
Tuscarora Frederick E
Unionville Frederick E
Upper Marlboro Prince George's E
Valley Lee St Marys E
Waldorf Charles E
Walkersville Frederick E
Washington Grove Montgomery E
Welcome Charles E
Westernport Allegany E
White Plains Charles E
Williamsport Washington E
Woodsboro Frederick E
  1. Listed above are most places served by USA area code 301. When multiple places in a US state share the same name we list the largest one only. Cities with population over 50,000 are displayed in bold text.
  2. E stands for Eastern Time (currently ).
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