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

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Area Code 240

Area code 240 is in Maryland, USA , spanning 11 counties and serving 181 cities , including Germantown, Rockville or Gaithersburg; it currently uses 785 prefixes , assigned from 240-200-XXXX through 240-998-XXXX.

In service since June 01, 1997, area code 240 is an overlay Numbering Plan Area, part of overlay complex 301/240/227.

The current local time is .

240 area code location on a map
© OpenStreetMap contributorsFor exact NPA boundaries see official 240 area code map

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More Maryland area codes:

  • 227
  • 301
  • 410
  • 443
  • 667

Locate any 240-NXX prefix:

240-200-XXXX --- 240-299-XXXX
NPANXX Area served[1] Provider[2] Date[3]
240-200 Washington Zone 2 Multiple 10/4/2010
240-201 Ridge Multiple N/A
240-202 Highfield Multiple 5/28/2020
240-203 Hagerstown Multiple 10/4/2011
240-204 Washington Zone 2 Multiple 9/7/2011
240-205 Washington Zone 10 Multiple 7/23/2003
240-206 Washington Zone 14 Multiple N/A
240-207 Damascus Multiple N/A
240-208 La Plata Multiple N/A
240-209 Indian Head Multiple N/A
240-210 Waldorf Multiple N/A
240-212 Oakland Core Communications N/A
240-213 Waldorf Multiple N/A
240-214 Mechanicsville Peerless Network Of Maryland N/A
240-215 Frederick Multiple N/A
240-216 Waldorf Multiple 3/15/2001
240-217 Hagerstown Omnipoint Communications Cap Operations 4/16/2001
240-218 Nanjemoy Peerless Network Of Maryland N/A
240-219 Ridge Multiple 9/22/2014
240-220 Poolesville Multiple N/A
240-221 Washington Zone 11 Multiple N/A
240-222 Waldorf Multiple N/A
240-223 Washington Zone 2 Multiple N/A
240-224 Gaithersburg Multiple 9/10/2012
240-225 Frederick Core Communications N/A
240-226 Oakland Multiple 7/16/2020
240-227 Myersville New Cingular Wireless PCS 07/25/2023
240-228 Washington Zone 13 Verizon Maryland N/A
240-229 Waldorf Multiple N/A
240-230 Hughesville Multiple N/A
240-231 Hagerstown Core Communications N/A
240-232 Washington Zone 14 Multiple N/A
240-233 Tompkinsville Multiple N/A
240-234 Washington Zone 2 Multiple 10/4/2011
240-235 Washington Zone 2 Paetec Itel N/A
240-236 Frederick Multiple N/A
240-237 Lexington Park-Great Mills Multiple N/A
240-238 Washington Zone 10 Paetec Itel N/A
240-239 Leonardtown Core Communications N/A
240-240 Damascus Multiple 7/2/2020
240-241 Washington Zone 13 Multiple N/A
240-242 Washington Zone 11 Multiple N/A
240-243 Gaithersburg Multiple N/A
240-244 Washington Zone 16 Multiple N/A
240-245 Washington Zone 14 Multiple N/A
240-246 Gaithersburg Multiple N/A
240-247 Washington Zone 3 Multiple N/A
240-248 Ridge Multiple N/A
240-249 Mechanicsville Multiple N/A
240-250 Brandywine Peerless Network Of Maryland N/A
240-251 Highfield Core Communications N/A
240-252 Gaithersburg Multiple N/A
240-253 Washington Zone 6 Multiple N/A
240-254 Hughesville Multiple N/A
240-255 Poolesville Multiple N/A
240-256 Leonardtown Multiple N/A
240-257 Nanjemoy Multiple N/A
240-258 Ridge Multiple N/A
240-259 Hughesville Multiple 4/22/2021
240-260 Washington Zone 14 Multiple N/A
240-261 Gaithersburg Multiple 12/23/2015
240-262 Lexington Park-Great Mills Multiple 10/17/2011
240-263 Washington Zone 2 Multiple 11/10/2011
240-264 Laurel Multiple N/A
240-265 Washington Zone 2 Multiple 11/10/2011
240-266 Washington Zone 14 Multiple N/A
240-267 Hagerstown Multiple 5/18/2017
240-268 Washington Zone 10 Multiple N/A
240-269 Washington Zone 16 Multiple N/A
240-270 Waldorf Multiple 11/7/2011
240-271 Washington Zone 2 New Cingular Wireless PCS N/A
240-272 Washington Zone 2 Multiple 11/10/2011
240-273 Washington Zone 6 Multiple N/A
240-274 Washington Zone 2 New Cingular Wireless PCS N/A
240-275 Grantsville Core Communications N/A
240-276 Washington Zone 10 Verizon Maryland 5/4/2004
240-277 Washington Zone 2 Omnipoint Communications Cap Operations 10/18/2002
240-278 Laurel Multiple 7/8/2011
240-279 Waldorf Core Communications N/A
240-280 Laurel Multiple N/A
240-281 Washington Zone 2 New Cingular Wireless PCS N/A
240-282 Mechanicsville Multiple N/A
240-283 Washington Zone 11 Multiple N/A
240-284 Frostburg Multiple 11/1/2004
240-285 Frederick Multiple N/A
240-286 Washington Zone 2 Multiple 9/17/2002
240-287 Hancock Core Communications N/A
240-288 Thurmont Multiple 11/1/2004
240-289 Washington Zone 6 Multiple N/A
240-290 Washington Zone 11 Multiple N/A
240-291 Hagerstown Multiple 10/15/2002
240-292 Washington Zone 11 Multiple N/A
240-293 Washington Zone 12 Multiple N/A
240-294 Laurel Multiple N/A
240-295 Laurel Multiple N/A
240-296 Washington Zone 4 Multiple N/A
240-297 Washington Zone 13 Multiple N/A
240-298 Leonardtown Cellco Partnership N/A
240-299 Waldorf MetroPCS N/A
240-300-XXXX --- 240-399-XXXX
NPANXX Area served[1] Provider[2] Date[3]
240-300 Waldorf Multiple 12/7/2010
240-301 Clear Spg Multiple 6/9/2020
240-302 Laurel Multiple 9/28/2016
240-303 Washington Zone 16 Multiple N/A
240-304 Washington Zone 5 Multiple 7/3/2002
240-305 Washington Zone 3 Omnipoint Communications Cap Operations N/A
240-306 Gaithersburg Multiple N/A
240-307 Emmitsburg Multiple 3/27/2003
240-308 Damascus Multiple N/A
240-309 Leonardtown Multiple 9/10/2012
240-310 Hagerstown Multiple N/A
240-312 Washington Zone 5 Multiple N/A
240-313 Hagerstown Multiple N/A
240-314 Washington Zone 10 Multiple N/A
240-315 Frederick Multiple N/A
240-316 Washington Zone 2 Multiple N/A
240-317 Lexington Park-Great Mills Multiple N/A
240-318 Washington Zone 16 Multiple N/A
240-319 Laurel Multiple 6/6/2008
240-320 Waldorf Multiple N/A
240-321 Oakland Multiple N/A
240-322 Mccoole Core Communications N/A
240-323 Emmitsburg Core Communications N/A
240-324 Ashton Multiple 10/8/2008
240-325 Damascus Core Communications N/A
240-326 Washington Zone 15 Multiple N/A
240-327 Gaithersburg Core Communications N/A
240-328 Washington Zone 10 Multiple N/A
240-329 Hagerstown Multiple N/A
240-330 Washington Zone 2 Multiple 12/14/2007
240-331 Washington Zone 3 Multiple N/A
240-332 Tompkinsville Multiple N/A
240-333 Washington Zone 2 Paetec Itel 5/9/2001
240-334 Washington Zone 14 Multiple N/A
240-335 Washington Zone 14 Multiple N/A
240-336 Washington Zone 2 Core Communications N/A
240-337 Washington Zone 5 Multiple N/A
240-338 Washington Zone 3 Multiple N/A
240-339 Washington Zone 15 Multiple N/A
240-340 Washington Zone 2 Multiple 8/18/2011
240-341 Buckeyestown Multiple 2/25/2009
240-342 Ashton Multiple N/A
240-343 Hancock Multiple 5/10/2011
240-344 Frederick New Cingular Wireless PCS 10/15/2002
240-345 Ashton Multiple 3/9/2006
240-346 Waldorf MetroPCS N/A
240-347 Hagerstown Multiple 8/4/2008
240-348 Washington Zone 16 Multiple N/A
240-349 La Plata Multiple N/A
240-350 Washington Zone 3 Omnipoint Communications Cap Operations N/A
240-351 Washington Zone 3 Omnipoint Communications Cap Operations N/A
240-352 La Plata Peerless Network Of Maryland N/A
240-353 Washington Zone 3 Omnipoint Communications Cap Operations N/A
240-354 Washington Zone 3 Omnipoint Communications Cap Operations N/A
240-355 Washington Zone 3 Omnipoint Communications Cap Operations N/A
240-356 Myersville Multiple N/A
240-357 Frederick Multiple 6/12/2006
240-358 Damascus Multiple N/A
240-359 Indian Head Multiple N/A
240-360 Laurel Multiple 9/17/2013
240-361 Gaithersburg Multiple N/A
240-362 Cumberland Multiple N/A
240-363 Washington Zone 11 Onvoy N/A
240-364 Gaithersburg Multiple 5/9/2001
240-365 Damascus Baltimore-Washington Telephone N/A
240-366 Williamsport Multiple N/A
240-367 Frederick Multiple 10/18/2002
240-368 Waldorf Multiple N/A
240-369 Mount Airy Core Communications N/A
240-370 Washington Zone 2 Omnipoint Communications Cap Operations 12/14/2007
240-371 Washington Zone 12 Multiple N/A
240-372 Gaithersburg MetroPCS N/A
240-373 Washington Zone 13 Verizon Maryland N/A
240-374 Laurel Multiple N/A
240-375 Washington Zone 5 Multiple N/A
240-376 Hughesville Multiple N/A
240-377 Indian Head Multiple N/A
240-378 Cumberland Core Communications N/A
240-379 Frederick Verizon Maryland N/A
240-380 Washington Zone 2 Multiple 9/17/2007
240-381 Washington Zone 3 New Cingular Wireless PCS N/A
240-382 Hagerstown Multiple 6/11/2009
240-383 Washington Zone 2 Multiple N/A
240-384 Lexington Park-Great Mills Multiple N/A
240-385 Myersville Multiple N/A
240-386 Washington Zone 10 Multiple N/A
240-387 Washington Zone 13 Multiple N/A
240-388 Gaithersburg Multiple 11/4/2002
240-389 Ashton Multiple N/A
240-390 Ashton Multiple N/A
240-391 Washington Zone 13 Multiple N/A
240-392 Washington Zone 5 Multiple N/A
240-393 Washington Zone 3 Multiple N/A
240-394 Mount Airy Multiple 12/13/2004
240-395 Washington Zone 2 Multiple N/A
240-396 Washington Zone 2 Multiple N/A
240-397 Frederick Multiple 3/6/2009
240-398 Washington Zone 3 Multiple 7/3/2002
240-399 Washington Zone 10 MCIMetro Access Transmission Services N/A
240-400-XXXX --- 240-499-XXXX
NPANXX Area served[1] Provider[2] Date[3]
240-400 Washington Zone 2 Multiple 8/18/2011
240-401 Washington Zone 10 New Cingular Wireless PCS N/A
240-402 Washington Zone 13 MCIMetro Access Transmission Services 9/21/2010
240-403 Washington Zone 10 Multiple N/A
240-404 Gaithersburg Multiple 2/13/2001
240-405 Frederick Multiple 7/27/2004
240-406 Washington Zone 10 Multiple 9/17/2009
240-407 Washington Zone 16 Multiple N/A
240-408 Washington Zone 10 Multiple 10/14/2009
240-409 Frederick New Cingular Wireless PCS N/A
240-410 Cumberland Multiple 1/13/2021
240-412 Waldorf Multiple 1/16/2001
240-413 Washington Zone 4 Omnipoint Communications Cap Operations 3/12/2001
240-414 Washington Zone 6 Multiple N/A
240-415 Frederick Multiple 12/16/2008
240-416 Waldorf Multiple 5/18/2001
240-417 Washington Zone 5 MetroPCS N/A
240-418 Washington Zone 2 Omnipoint Communications Cap Operations 11/12/2001
240-419 Waldorf Multiple 10/29/2007
240-420 Hagerstown Verizon Maryland N/A
240-421 Washington Zone 10 Omnipoint Communications Cap Operations 4/9/2001
240-422 Frederick Multiple 5/15/2002
240-423 Washington Zone 3 Omnipoint Communications Cap Operations 5/21/2001
240-424 Washington Zone 3 Multiple 11/16/2007
240-425 Washington Zone 2 Multiple N/A
240-426 Washington Zone 2 Omnipoint Communications Cap Operations 10/25/2001
240-427 Waldorf Multiple 4/23/2001
240-428 Washington Zone 10 Multiple N/A
240-429 Washington Zone 3 Multiple 12/19/2006
240-430 Washington Zone 11 Multiple N/A
240-431 Lexington Park-Great Mills Multiple N/A
240-432 Washington Zone 3 Omnipoint Communications Cap Operations N/A
240-433 Washington Zone 12 Multiple N/A
240-434 Leonardtown Multiple N/A
240-435 Waldorf Multiple 5/7/2009
240-436 Buckeyestown Multiple N/A
240-437 Ashton Multiple N/A
240-438 Washington Zone 3 Multiple 8/15/2011
240-439 Frederick Multiple 6/6/2008
240-440 Frederick Multiple 2/27/2009
240-441 Washington Zone 6 Omnipoint Communications Cap Operations 6/6/2001
240-442 Oakland Multiple 5/22/2001
240-443 Washington Zone 6 Multiple 11/6/2020
240-444 Laurel Multiple 9/7/2011
240-445 Washington Zone 2 Multiple 11/10/2011
240-446 Frederick Cellco Partnership 8/9/2001
240-447 Washington Zone 10 New Cingular Wireless PCS N/A
240-448 Waldorf Multiple 9/7/2011
240-449 Gaithersburg Multiple N/A
240-450 Washington Zone 3 Multiple N/A
240-451 Thurmont Multiple 9/2/2016
240-452 Hagerstown Multiple 7/22/2010
240-453 Washington Zone 10 Multiple N/A
240-454 Gaithersburg Multiple 4/22/2005
240-455 Washington Zone 5 Multiple 6/20/2001
240-456 Laurel Multiple N/A
240-457 Frederick Multiple 9/4/2008
240-458 Waldorf Multiple 10/4/2011
240-459 Laurel Multiple 7/27/2010
240-460 Washington Zone 3 New Cingular Wireless PCS N/A
240-461 Washington Zone 3 New Cingular Wireless PCS N/A
240-462 Washington Zone 3 Omnipoint Communications Cap Operations N/A
240-463 Washington Zone 3 New Cingular Wireless PCS N/A
240-464 Washington Zone 2 Multiple N/A
240-465 Washington Zone 2 Multiple N/A
240-466 Mechanicsville Multiple 7/10/2001
240-467 Washington Zone 4 Multiple 4/25/2013
240-468 Washington Zone 3 Multiple 11/16/2007
240-469 Hagerstown Multiple 2/14/2008
240-470 Laurel Multiple 10/4/2011
240-471 Washington Zone 12 Multiple N/A
240-472 Washington Zone 3 New Cingular Wireless PCS N/A
240-473 Washington Zone 13 Multiple N/A
240-474 Gaithersburg Multiple 5/22/2015
240-475 Washington Zone 3 New Cingular Wireless PCS N/A
240-476 Washington Zone 3 Omnipoint Communications Cap Operations 2/21/2001
240-477 Gaithersburg Multiple 5/20/2005
240-478 Washington Zone 3 Multiple 7/27/2004
240-479 Washington Zone 2 Multiple 4/7/2008
240-480 Washington Zone 2 Multiple 9/27/2010
240-481 Washington Zone 3 Omnipoint Communications Cap Operations 5/11/2001
240-482 Washington Zone 2 Multiple N/A
240-483 Washington Zone 2 Multiple N/A
240-484 Laurel New Cingular Wireless PCS 6/12/2017
240-485 Washington Zone 3 Multiple N/A
240-486 Washington Zone 14 Omnipoint Communications Cap Operations 3/12/2001
240-487 Washington Zone 4 Multiple N/A
240-488 Oakland Multiple 5/16/2012
240-489 Poolesville Multiple 2/13/2001
240-490 Middletown Multiple 6/12/2001
240-491 Washington Zone 3 Multiple N/A
240-492 Washington Zone 5 Multiple N/A
240-493 Washington Zone 6 Multiple N/A
240-494 Washington Zone 3 Multiple 5/9/2001
240-495 Washington Zone 4 Multiple 10/29/2013
240-496 Leonardtown Multiple 3/17/2016
240-497 Washington Zone 2 Multiple N/A
240-498 Washington Zone 2 Omnipoint Communications Cap Operations N/A
240-499 Washington Zone 10 Multiple N/A
240-500-XXXX --- 240-599-XXXX
NPANXX Area served[1] Provider[2] Date[3]
240-500 Hagerstown Multiple 10/21/2010
240-501 Washington Zone 3 Multiple 10/8/2001
240-502 Washington Zone 3 Multiple 10/4/2011
240-503 Tompkinsville Multiple 4/9/2013
240-504 Washington Zone 3 Multiple 10/4/2011
240-505 Washington Zone 3 Omnipoint Communications Cap Operations 10/31/2001
240-506 Washington Zone 10 New Cingular Wireless PCS 1/9/2002
240-507 Washington Zone 2 Multiple 9/5/2008
240-508 Washington Zone 5 MetroPCS N/A
240-509 Washington Zone 14 Multiple 3/31/2008
240-510 Washington Zone 15 Multiple N/A
240-512 Washington Zone 13 Multiple 8/8/2006
240-513 Hagerstown Multiple 10/19/2011
240-514 Washington Zone 11 Multiple N/A
240-515 Washington Zone 2 Multiple 6/20/2001
240-516 Washington Zone 12 Multiple N/A
240-517 Laurel Cellco Partnership 10/28/2014
240-518 Waldorf Multiple 10/21/2011
240-519 Washington Zone 2 Multiple 11/10/2011
240-520 Hagerstown Multiple 3/29/2006
240-521 Laurel New Cingular Wireless PCS 1/11/2018
240-522 Cumberland Multiple 12/12/2001
240-523 La Plata Multiple 2/13/2001
240-524 Laurel Multiple N/A
240-525 Washington Zone 15 Multiple N/A
240-526 Leonardtown Multiple N/A
240-527 Hagerstown Multiple N/A
240-528 Hughesville Multiple N/A
240-529 Frederick Multiple N/A
240-530 Waldorf Multiple 8/1/2013
240-531 Washington Zone 3 Multiple 3/7/2017
240-532 Washington Zone 5 Multiple 10/29/2013
240-533 Washington Zone 3 Multiple N/A
240-534 Washington Zone 2 Multiple 4/11/2016
240-535 Washington Zone 3 New Cingular Wireless PCS 1/9/2001
240-536 Ashton Multiple N/A
240-537 Hagerstown Multiple 9/15/2017
240-538 Leonardtown Multiple 2/13/2001
240-539 Washington Zone 4 Multiple N/A
240-540 Washington Zone 13 Multiple 10/5/2016
240-541 Washington Zone 2 Multiple 10/31/2011
240-542 Washington Zone 13 Multiple N/A
240-543 Washington Zone 2 Omnipoint Communications Cap Operations 7/25/2006
240-544 Washington Zone 14 Multiple N/A
240-545 Washington Zone 15 Multiple N/A
240-546 Washington Zone 16 Multiple N/A
240-547 Laurel Multiple N/A
240-548 Washington Zone 14 Multiple N/A
240-549 Frederick Multiple 3/17/2016
240-550 Washington Zone 10 New Cingular Wireless PCS 3/26/2009
240-551 Washington Zone 10 Multiple 3/25/2009
240-552 Washington Zone 10 Multiple 3/25/2009
240-553 Washington Zone 13 Multiple N/A
240-554 Laurel Multiple N/A
240-556 Washington Zone 14 Multiple N/A
240-557 Washington Zone 6 Multiple 3/14/2017
240-558 Washington Zone 11 Multiple N/A
240-559 Ashton Multiple N/A
240-560 Washington Zone 12 Multiple 4/23/2001
240-561 Leonardtown Multiple 7/7/2008
240-562 Gaithersburg MCIMetro Access Transmission Services 6/12/2015
240-563 Washington Zone 5 Multiple 7/5/2017
240-564 Laurel Multiple 12/21/2018
240-565 Laurel Multiple 12/30/2005
240-566 Frederick Multiple 6/11/2002
240-567 Washington Zone 10 Verizon Maryland 7/12/2006
240-568 Laurel Verizon Maryland N/A
240-569 Flintstone Multiple 9/22/2017
240-570 Ashton Multiple 2/24/2016
240-571 Laurel Multiple 1/14/2021
240-572 Leonardtown Multiple 11/15/2017
240-573 Washington Zone 15 Multiple N/A
240-574 Friendsville Multiple 8/27/2020
240-575 Frederick Multiple 12/30/2005
240-576 Hagerstown Multiple 12/20/2017
240-577 Leonardtown Multiple 8/9/2006
240-578 Frederick Multiple 7/8/2011
240-579 Ashton Omnipoint Communications Cap Operations 1/11/2018
240-580 Cumberland Multiple 6/14/2001
240-581 Laurel Multiple N/A
240-582 Washington Zone 4 Multiple N/A
240-583 Laurel Multiple 4/28/2010
240-584 Laurel Multiple 1/11/2018
240-585 Waldorf Multiple 6/29/2011
240-586 Frederick Multiple 12/22/2006
240-587 Leonardtown Multiple 7/6/2009
240-588 Grantsville Multiple 2/1/2018
240-589 Mccoole Multiple 3/7/2018
240-590 Washington Zone 12 Multiple 4/9/2018
240-591 Hagerstown Multiple 4/17/2018
240-592 Washington Zone 13 Verizon Maryland 7/1/2016
240-593 Laurel Omnipoint Communications Cap Operations 3/13/2001
240-594 Bittinger Multiple 5/15/2018
240-595 Washington Zone 3 Multiple 9/13/2006
240-596 Ashton Multiple 6/11/2018
240-597 Gaithersburg Multiple N/A
240-598 Hughesville Multiple 6/11/2018
240-599 Washington Zone 10 Multiple N/A
240-600-XXXX --- 240-699-XXXX
NPANXX Area served[1] Provider[2] Date[3]
240-600 Washington Zone 2 Multiple 4/27/2011
240-601 Washington Zone 3 Omnipoint Communications Cap Operations N/A
240-602 Washington Zone 3 Omnipoint Communications Cap Operations N/A
240-603 Washington Zone 3 Omnipoint Communications Cap Operations N/A
240-604 Washington Zone 3 Omnipoint Communications Cap Operations N/A
240-605 Washington Zone 3 Omnipoint Communications Cap Operations N/A
240-606 Washington Zone 3 Omnipoint Communications Cap Operations N/A
240-607 Waldorf Multiple N/A
240-608 Frederick Multiple 3/11/2013
240-609 Cumberland Multiple 9/11/2014
240-610 Washington Zone 4 Multiple 6/11/2018
240-612 Washington Zone 5 Level 3 Telecom Of Maryland N/A
240-613 Washington Zone 4 Paetec Itel 4/5/2012
240-614 Washington Zone 10 Multiple 7/16/2013
240-615 Washington Zone 4 Multiple 5/29/2013
240-616 Washington Zone 13 Multiple N/A
240-617 Highfield Multiple 7/16/2015
240-618 Washington Zone 10 Multiple 10/7/2014
240-619 Washington Zone 5 Multiple N/A
240-620 Washington Zone 10 Multiple N/A
240-621 Washington Zone 11 Multiple N/A
240-622 La Plata Multiple 6/11/2018
240-623 Washington Zone 4 Multiple 12/8/2014
240-624 Washington Zone 13 Multiple N/A
240-625 Hagerstown Multiple 4/17/2001
240-626 Frederick Multiple N/A
240-627 Washington Zone 11 Multiple N/A
240-628 Mechanicsville Multiple 6/11/2018
240-629 Frederick Multiple N/A
240-630 Washington Zone 2 Multiple 10/31/2011
240-631 Gaithersburg Verizon Maryland N/A
240-632 Gaithersburg Verizon Maryland N/A
240-633 Hughesville Multiple 5/22/2015
240-634 Ridge Multiple 6/11/2018
240-635 Tompkinsville Multiple 6/11/2018
240-636 Laurel Multiple N/A
240-637 Washington Zone 3 Multiple 6/11/2018
240-638 Washington Zone 3 Multiple N/A
240-639 Laurel Multiple 6/1/2018
240-640 Waldorf New Cingular Wireless PCS 3/24/2009
240-641 Washington Zone 3 Multiple N/A
240-642 Washington Zone 10 Multiple 8/2/2018
240-643 Washington Zone 3 Omnipoint Communications Cap Operations 5/16/2002
240-644 Washington Zone 2 Multiple N/A
240-645 Washington Zone 3 Multiple N/A
240-646 Laurel Multiple N/A
240-647 Clear Spg Multiple 6/11/2018
240-648 Keedysville Multiple 6/12/2018
240-649 Smithsburg Multiple 6/12/2018
240-650 Washington Zone 3 Multiple 11/17/2011
240-651 Frederick Multiple N/A
240-652 Mechanicsville Multiple 2/13/2001
240-653 Laurel Multiple N/A
240-654 Gaithersburg Multiple 5/19/2006
240-655 Kitzmiller Multiple 12/18/2017
240-656 Frederick Multiple 8/30/2019
240-657 Frostburg Multiple 1/6/2016
240-658 Gaithersburg Multiple 12/4/2018
240-659 Ashton Multiple 1/30/2019
240-660 Washington Zone 10 Multiple 3/31/2015
240-661 Lexington Park-Great Mills Multiple 5/21/2015
240-662 Washington Zone 3 Verizon Maryland N/A
240-663 Middletown Multiple 1/30/2019
240-664 Cumberland Multiple 3/6/2019
240-665 Washington Zone 10 Multiple 1/9/2017
240-666 Nanjemoy Multiple 6/25/2015
240-667 Washington Zone 4 Multiple N/A
240-668 Damascus Multiple N/A
240-669 Washington Zone 11 Multiple N/A
240-670 Washington Zone 3 Multiple 3/6/2012
240-671 Washington Zone 2 Multiple N/A
240-672 Washington Zone 10 Multiple N/A
240-673 Washington Zone 2 Multiple 5/17/2019
240-674 Frederick Multiple N/A
240-675 Myersville New Cingular Wireless PCS N/A
240-676 Washington Zone 3 Cellco Partnership N/A
240-677 Washington Zone 5 MCIMetro Access Transmission Services 5/20/2019
240-678 Washington Zone 3 Multiple N/A
240-679 Friendsville Multiple 6/11/2018
240-680 Frederick Multiple 10/29/2018
240-681 Brandywine Multiple 10/30/2003
240-682 Waldorf Multiple N/A
240-683 Gaithersburg Verizon Maryland N/A
240-684 Washington Zone 13 Multiple N/A
240-685 Brandywine Multiple N/A
240-686 Gaithersburg Multiple N/A
240-687 Washington Zone 3 Cellco Partnership N/A
240-688 Washington Zone 3 Multiple 6/12/2006
240-689 Washington Zone 15 Multiple 5/28/2019
240-690 Gaithersburg Multiple 11/10/2016
240-691 Washington Zone 5 Multiple N/A
240-692 Grantsville Multiple 5/30/2019
240-693 Walkersville Multiple 9/25/2019
240-694 Washington Zone 2 Multiple N/A
240-695 Washington Zone 5 Multiple N/A
240-696 Washington Zone 4 Multiple N/A
240-697 Mechanicsville Multiple 9/12/2019
240-698 Myersville Multiple 10/15/2019
240-699 Buckeyestown Multiple 5/22/2001
240-701-XXXX --- 240-799-XXXX
NPANXX Area served[1] Provider[2] Date[3]
240-701 Washington Zone 3 New Cingular Wireless PCS 3/25/2009
240-702 Gaithersburg Multiple 10/7/2014
240-703 Ashton Multiple 2/10/2021
240-704 Washington Zone 3 Multiple 3/25/2009
240-705 Washington Zone 3 Multiple 3/25/2009
240-706 Washington Zone 3 Multiple 3/26/2009
240-707 Hagerstown Multiple 1/27/2012
240-708 Laurel Multiple 6/8/2012
240-709 Laurel Multiple 10/25/2019
240-710 Frederick MCIMetro Access Transmission Services 12/30/2019
240-712 Laurel Multiple 11/1/2011
240-713 Laurel Multiple 11/2/2011
240-714 Washington Zone 4 Multiple 2/20/2015
240-715 Washington Zone 10 Multiple N/A
240-716 Washington Zone 5 Multiple 11/15/2013
240-717 Leonardtown Multiple 4/22/2021
240-718 Lexington Park-Great Mills Multiple 2/13/2001
240-719 Washington Zone 5 Multiple 4/11/2016
240-720 Gaithersburg Multiple N/A
240-721 Washington Zone 5 Multiple 3/19/2020
240-722 Ashton Multiple N/A
240-723 Washington Zone 3 Multiple N/A
240-724 Washington Zone 6 Multiple N/A
240-725 Lexington Park-Great Mills Multiple N/A
240-726 Washington Zone 4 Multiple 9/1/2020
240-727 Cumberland New Cingular Wireless PCS N/A
240-728 Washington Zone 10 Multiple 5/12/2020
240-729 Ashton Omnipoint Communications Cap Operations 6/16/2020
240-730 Hagerstown Multiple 8/12/2020
240-731 Washington Zone 10 New Cingular Wireless PCS N/A
240-732 Mount Airy Multiple 11/12/2015
240-733 Ashton Multiple 7/15/2020
240-734 Smithsburg Multiple 3/22/2012
240-735 Brunswick Multiple 9/1/2020
240-736 Laurel Multiple 9/2/2020
240-737 Washington Zone 4 Paetec Itel 5/9/2001
240-738 Hancock Multiple 9/3/2020
240-739 Frederick Multiple 9/15/2020
240-740 Washington Zone 10 Atlantech Online 9/3/2015
240-741 Frederick Multiple 10/1/2020
240-742 Washington Zone 14 Multiple 11/20/2020
240-743 Washington Zone 2 Multiple 11/16/2006
240-744 Washington Zone 2 Multiple N/A
240-745 Damascus Multiple N/A
240-746 Brandywine Multiple 12/4/2020
240-747 Washington Zone 11 Multiple 5/9/2001
240-748 Washington Zone 3 Multiple 12/23/2020
240-749 Laurel Multiple 1/12/2021
240-750 Gaithersburg Multiple 5/6/2005
240-751 Gaithersburg Multiple N/A
240-752 Washington Zone 2 Multiple N/A
240-753 Washington Zone 10 Multiple N/A
240-754 Waldorf Multiple 11/11/2011
240-755 Laurel Multiple 1/5/2006
240-756 Washington Zone 10 Omnipoint Communications Cap Operations 2/10/2021
240-757 Washington Zone 13 Multiple N/A
240-758 Laurel Multiple 3/3/2016
240-759 Washington Zone 15 Multiple 3/25/2021
240-760 Washington Zone 2 Multiple 9/22/2015
240-761 Laurel Multiple 7/20/2021
240-762 Washington Zone 2 Multiple 8/22/2012
240-763 Washington Zone 15 Multiple 10/1/2015
240-764 Washington Zone 4 Multiple N/A
240-765 Washington Zone 5 Multiple N/A
240-766 Washington Zone 6 Multiple N/A
240-767 Washington Zone 5 Multiple 5/9/2001
240-768 Nanjemoy Multiple 4/22/2021
240-769 Keedysville Multiple 7/20/2021
240-770 Washington Zone 4 Multiple 11/22/2004
240-771 Poolesville Multiple 2/18/2016
240-772 Frederick Multiple 11/17/2011
240-773 Washington Zone 10 Verizon Maryland N/A
240-774 Lonaconing Multiple 10/5/2015
240-775 Westernport Multiple 10/5/2015
240-776 La Plata Multiple N/A
240-777 Washington Zone 10 Verizon Maryland N/A
240-778 Washington Zone 10 Multiple N/A
240-779 Ashton Multiple N/A
240-780 Gaithersburg Multiple N/A
240-781 Washington Zone 2 Multiple 8/18/2015
240-782 Damascus Multiple N/A
240-783 Washington Zone 2 Mte N/A
240-784 Myersville Multiple 6/6/2001
240-785 Oakland Multiple 7/20/2021
240-786 Laurel Multiple N/A
240-787 Brandywine Multiple N/A
240-788 Washington Zone 5 Multiple N/A
240-789 Washington Zone 10 Multiple 8/10/2021
240-790 Washington Zone 13 Multiple N/A
240-791 Washington Zone 4 Multiple 8/11/2021
240-792 Frederick Multiple 8/11/2021
240-793 Gaithersburg MetroPCS 3/15/2001
240-794 Lexington Park-Great Mills Multiple N/A
240-795 Washington Zone 5 Multiple 8/12/2021
240-796 Washington Zone 10 Multiple 8/25/2021
240-797 Ashton Multiple 8/25/2021
240-798 Gaithersburg Multiple 9/1/2021
240-799 Brandywine Multiple 6/26/2020
240-800-XXXX --- 240-899-XXXX
NPANXX Area served[1] Provider[2] Date[3]
240-800 Washington Zone 2 Multiple 6/22/2012
240-801 Gaithersburg Multiple 10/4/2013
240-802 Washington Zone 2 Multiple 5/10/2013
240-803 Cumberland Multiple 1/27/2012
240-804 Tompkinsville Multiple 4/23/2001
240-805 Gaithersburg Multiple 11/17/2015
240-806 Indian Head Multiple 9/30/2015
240-807 Cumberland Multiple 9/1/2021
240-808 Leonardtown Multiple 3/31/2015
240-809 Smithsburg Multiple 9/1/2021
240-810 Washington Zone 10 Multiple 4/5/2016
240-812 Poolesville Multiple N/A
240-813 Gaithersburg Multiple N/A
240-814 Laurel Multiple 5/20/2022
240-815 Frederick Multiple 11/17/2015
240-816 Keedysville Multiple 10/5/2015
240-817 Ashton Multiple 1/12/2016
240-818 Myersville Multiple N/A
240-819 Williamsport Multiple 9/1/2021
240-820 Ashton Multiple 3/25/2021
240-821 Washington Zone 3 Multiple 5/27/2005
240-822 New Market Multiple 3/15/2021
240-823 Brandywine Multiple 2/13/2001
240-824 Frostburg Multiple 3/15/2021
240-825 Washington Zone 4 Multiple 3/17/2016
240-826 Washington Zone 10 Verizon Maryland 5/7/2007
240-827 Lonaconing Multiple 9/1/2021
240-828 Washington Zone 4 Multiple N/A
240-829 Emmitsburg Multiple 9/12/2019
240-830 Washington Zone 5 Multiple 11/10/2015
240-831 Frederick Multiple 4/26/2016
240-832 Washington Zone 2 Multiple N/A
240-833 Washington Zone 11 Multiple N/A
240-834 Kitzmiller Multiple 3/15/2021
240-835 Clear Spg Multiple 6/3/2021
240-836 Mt Savage Multiple 9/1/2021
240-837 Hughesville Multiple 2/13/2001
240-838 Washington Zone 5 Multiple 3/12/2001
240-839 Washington Zone 3 Multiple 1/13/2007
240-840 Frederick Multiple 6/19/2018
240-841 Laurel Multiple N/A
240-842 Washington Zone 14 Multiple N/A
240-843 Washington Zone 13 Multiple N/A
240-844 Ridge Multiple 2/13/2001
240-845 Washington Zone 13 Multiple N/A
240-846 Washington Zone 16 Multiple N/A
240-847 Washington Zone 3 Multiple 12/9/2015
240-848 Gaithersburg Multiple N/A
240-849 Hagerstown Multiple 9/8/2021
240-850 Hagerstown Multiple 5/25/2016
240-851 Mccoole Multiple 7/16/2020
240-852 Myersville Multiple 9/13/2021
240-853 Laurel Multiple 9/28/2021
240-854 Washington Zone 4 Multiple 12/7/2021
240-855 Washington Zone 2 Multiple 10/9/2006
240-856 Laurel Cellco Partnership 4/11/2016
240-857 Washington Zone 5 Level 3 Telecom Of Maryland N/A
240-858 Washington Zone 2 Multiple 7/12/2016
240-859 Ashton Multiple 7/11/2016
240-860 Cumberland Multiple 8/23/2016
240-861 Ashton Multiple 10/7/2021
240-862 Mt Savage Multiple 9/2/2016
240-863 Washington Zone 3 Multiple N/A
240-864 Washington Zone 10 Paetec Itel 5/9/2001
240-865 Washington Zone 14 Multiple N/A
240-866 Hagerstown Multiple 9/20/2019
240-867 Washington Zone 3 Multiple 6/20/2017
240-868 Washington Zone 12 Multiple 5/9/2001
240-869 Washington Zone 10 Multiple 10/7/2021
240-870 Middletown Multiple 9/2/2016
240-871 Lexington Park-Great Mills Multiple 10/7/2021
240-872 Washington Zone 6 Multiple 10/7/2021
240-873 Buckeyestown Multiple 10/10/2019
240-874 Thurmont Multiple 10/10/2019
240-875 Mount Airy Multiple 10/10/2019
240-876 Washington Zone 2 Omnipoint Communications Cap Operations N/A
240-877 Frederick Multiple 8/25/2016
240-878 Hagerstown Multiple 8/3/2017
240-879 Washington Zone 4 Multiple 10/7/2021
240-880 Washington Zone 11 Multiple N/A
240-881 Washington Zone 13 Multiple 11/4/2021
240-882 Washington Zone 5 MetroPCS N/A
240-883 Ashton Multiple N/A
240-884 Tompkinsville Multiple 4/29/2021
240-885 Washington Zone 10 Multiple 1/21/2021
240-886 Washington Zone 4 Multiple 11/17/2021
240-887 Ashton Multiple 12/7/2021
240-888 Washington Zone 10 New Cingular Wireless PCS N/A
240-889 Washington Zone 10 Multiple 12/6/2021
240-890 Washington Zone 5 Multiple 12/7/2021
240-891 Damascus Multiple 12/10/2021
240-892 Washington Zone 15 Multiple N/A
240-893 Washington Zone 3 New Cingular Wireless PCS N/A
240-894 Lexington Park-Great Mills Multiple 12/10/2021
240-895 Lexington Park-Great Mills Multiple N/A
240-896 Hagerstown Multiple 12/28/2021
240-897 Washington Zone 16 Multiple N/A
240-898 Washington Zone 4 Multiple N/A
240-899 Washington Zone 2 Omnipoint Communications Cap Operations 3/13/2001
240-900-XXXX --- 240-998-XXXX
NPANXX Area served[1] Provider[2] Date[3]
240-900 Washington Zone 4 Onvoy 2/18/2015
240-901 La Plata Multiple 5/22/2014
240-902 Damascus Multiple 12/28/2021
240-903 Indian Head Multiple 12/3/2013
240-904 Laurel Cellco Partnership 6/23/2016
240-905 Brandywine Multiple 1/10/2022
240-906 Washington Zone 4 Multiple N/A
240-907 Washington Zone 10 Multiple 7/12/2016
240-908 Walkersville Multiple 9/2/2016
240-909 Laurel Multiple 1/11/2022
240-910 Frederick Multiple 3/3/2021
240-912 Gaithersburg Multiple N/A
240-913 Damascus Multiple 9/2/2016
240-914 Highfield Multiple 1/11/2022
240-915 New Market Multiple N/A
240-916 Cumberland Multiple 1/11/2022
240-917 Laurel Multiple 11/12/2015
240-918 Ashton Multiple 10/20/2016
240-919 Ashton Omnipoint Communications Cap Operations 1/26/2022
240-920 Cumberland Multiple 5/3/2001
240-921 Washington Zone 10 Multiple 1/26/2022
240-922 Washington Zone 11 Multiple 7/15/2020
240-923 Washington Zone 6 Multiple 1/26/2022
240-924 Mount Airy Multiple 2/10/2022
240-925 Leonardtown Cellco Partnership 8/9/2001
240-926 Hughesville Multiple 5/18/2022
240-927 Washington Zone 4 Multiple 5/18/2022
240-928 Myersville Multiple 5/26/2022
240-929 Washington Zone 14 Multiple N/A
240-930 Laurel Multiple 6/29/2022
240-931 Frederick Multiple 6/30/2022
240-932 Washington Zone 14 Multiple 6/30/2022
240-933 Buckeyestown Multiple 2/28/2022
240-934 Middletown Multiple 2/12/2021
240-935 Laurel Multiple 7/12/2022
240-936 Ashton Multiple 5/18/2022
240-937 Gaithersburg Multiple 7/22/2022
240-938 Ashton Omnipoint Communications Cap Operations 6/6/2001
240-939 Washington Zone 11 Multiple 7/26/2022
240-940 Washington Zone 4 Multiple 7/26/2022
240-941 Washington Zone 2 Multiple 8/3/2022
240-942 Bittinger Multiple 3/15/2021
240-943 Frostburg Multiple 8/5/2022
240-944 Westernport Multiple 3/15/2021
240-945 Washington Zone 3 Multiple 11/6/2020
240-946 Washington Zone 14 Multiple 10/25/2021
240-947 Myersville New Cingular Wireless PCS 8/16/2022
240-948 Leonardtown Multiple 8/25/2022
240-949 Washington Zone 16 Multiple 5/9/2001
240-951 Hagerstown Teleport Communications America 3/24/2022
240-952 Hagerstown Teleport Communications America 3/24/2022
240-953 Hagerstown Teleport Communications America 3/24/2022
240-954 Hagerstown Teleport Communications America 3/24/2022
240-955 La Plata Multiple 8/25/2022
240-956 Washington Zone 2 Multiple 11/6/2020
240-957 Damascus Multiple 8/25/2022
240-960 Washington Zone 4 Multiple 9/1/2022
240-961 Poolesville Multiple 9/22/2022
240-962 Laurel Multiple 10/6/2022
240-963 Washington Zone 03 Multiple 10/18/2022
240-964 Cumberland Verizon Maryland 5/27/2008
240-965 Washington Zone 13 Multiple N/A
240-966 Washington Zone 16 Multiple 2/25/2022
240-967 Cumberland Multiple 10/19/2022
240-968 Laurel Multiple 10/21/2022
240-969 Walkersville Multiple 11/7/2022
240-970 Washington Zone 12 Multiple 6/2/2015
240-971 Frederick Multiple 8/2/2016
240-972 Laurel Multiple 5/26/2015
240-973 Washington Zone 12 Multiple 12/1/2022
240-974 Washington Zone 10 Multiple 12/21/2022
240-975 Laurel Multiple 12/30/2022
240-977 Washington Zone 6 Multiple 02/22/2023
240-978 Ashton Omnipoint Communications Cap Operations 01/06/2023
240-979 Cumberland Multiple N/A
240-980 Leonardtown Multiple 01/09/2023
240-981 Gaithersburg Multiple 02/10/2023
240-982 Gaithersburg Multiple 01/13/2023
240-983 Hagerstown Multiple 02/10/2023
240-984 New Market Multiple 02/27/2023
240-985 Williamsport Multiple 10/17/2016
240-986 Nanjemoy Multiple 2/13/2001
240-987 Washington Zone 10 New Cingular Wireless PCS 04/05/2023
240-988 Washington Zone 3 Omnipoint Communications Cap Operations N/A
240-989 Myersville Multiple 04/20/2023
240-990 Laurel Multiple 05/03/2023
240-991 Ashton Multiple 05/05/2023
240-992 Washington Zone 10 Multiple 05/05/2023
240-993 Indian Head Multiple 2/13/2001
240-994 Washington Zone 10 Cellco Partnership N/A
240-995 Flintstone Multiple 5/8/2020
240-996 Brunswick Multiple 10/17/2016
240-997 Washington Zone 3 Cellco Partnership N/A
240-998 Hancock Multiple 10/17/2016
  1. 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.
  2. A single provider refers to the original company controlling a whole NPA-NXX block (10,000 phone numbers). With Number Pooling, NPA-NXX blocks can be split into ten 1,000 phone number blocks and handed over to other service providers (available in the USA and Puerto Rico).
  3. Assignment date. N/A: unavailable date or central office code assigned before 2001.
  4. NXX prefixes last updated: February 13, 2026

Cities in area code 240

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 240. 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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