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

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Area code 779 is in Illinois, USA , spanning 24 counties and serving 248 cities , including Joliet, Dekalb or Crystal Lake; it currently uses 334 prefixes , assigned from 779-200-XXXX through 779-999-XXXX.

In service since March 17, 2007, area code 779 is an overlay Numbering Plan Area, part of overlay complex 815/779.

The current local time is .

779 area code location on a map
© OpenStreetMap contributorsFor exact NPA boundaries see official 779 area code map

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More Illinois area codes:

  • 217
  • 224
  • 309
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  • 815
  • 847
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Locate any 779-NXX prefix:

779-200-XXXX --- 779-299-XXXX
NPANXX Carrier1 Area Served2 Date3
779-200 Cellco Partnership Rockford 1/18/2011
779-201 Cellco Partnership La Salle 3/15/2012
779-202 Teleport Communications America Galena 3/6/2012
779-203 T-Mobile USA Rockford 10/13/2011
779-204 Onvoy Verona 3/19/2014
779-205 New Cingular Wireless PCS Joliet 5/30/2012
779-206 Cellco Partnership Joliet 6/20/2012
779-207 Cellco Partnership Rockford N/A
779-208 Cellco Partnership Rockford 11/16/2012
779-209 Peerless Network Of Illinois Sandwich 8/31/2012
779-210 AT&T Enterprises Rockford 9/16/2011
779-212 Nuso De Kalb 3/13/2013
779-213 Peerless Network Of Illinois Oglesby 4/9/2013
779-214 Mediacom Telephony Of Illinois Galena 12/17/2009
779-215 Ip Horizon Tonica 4/9/2013
779-216 Peerless Network Of Illinois Frankfort 4/9/2013
779-217 Dish Wireless De Kalb 05/19/2023
779-218 Peerless Network Of Illinois Watseka 4/9/2013
779-219 Commio Braidwood 08/11/2023
779-220 Bandwidth.com Clec Crystal Lake 5/25/2011
779-221 Onvoy Rockford 4/2/2010
779-222 Telnyx Sycamore 8/5/2010
779-223 Onvoy Onarga 3/23/2016
779-224 New Cingular Wireless PCS Momence 06/08/2023
779-225 Cellco Partnership Joliet 9/21/2011
779-226 Comcast IP Phone Polo 4/24/2013
779-227 MetroPCS Joliet 7/1/2014
779-228 Peerless Network Of Illinois Mazon 4/10/2013
779-229 Comcast IP Phone Depue 5/7/2013
779-230 New Cingular Wireless PCS Joliet 9/28/2016
779-231 MCIMetro Access Transmission Services Joliet 12/21/2015
779-232 Teleport Communications America Wilmington 6/7/2007
779-233 T-Mobile USA Joliet 7/21/2011
779-234 Bandwidth.com Clec Plainfield 8/1/2013
779-235 AT&T Enterprises Crescent City 2/4/2011
779-236 T-Mobile USA Kankakee 7/27/2011
779-237 Cellco Partnership Streator 1/8/2018
779-238 T-Mobile USA Rockford 4/4/2017
779-239 New Cingular Wireless PCS Princeton 1/14/2016
779-240 T-Mobile USA Kankakee 6/11/2014
779-241 T-Mobile USA Morris 6/1/2017
779-242 New Cingular Wireless PCS Joliet 10/5/2017
779-243 New Cingular Wireless PCS Frankfort 10/5/2017
779-244 New Cingular Wireless PCS Mchenry 10/5/2017
779-245 T-Mobile USA Sterling 7/14/2008
779-246 Teleport Communications America Rochelle 10/23/2017
779-247 Cellco Partnership Woodstock 12/1/2017
779-248 Centurylink Communications Galena 6/3/2016
779-249 Cellco Partnership Dwight 2/22/2018
779-250 T-Mobile USA Sterling 2/27/2018
779-251 Centurylink Communications Dixon 4/1/2014
779-252 Onvoy Plainfield 1/6/2016
779-253 Telnyx South Beloit 10/7/2014
779-254 Comcast IP Phone Frankfort 9/1/2015
779-255 Onvoy De Kalb 5/16/2018
779-256 Vonage America Rockford 6/5/2018
779-257 Bandwidth.com Clec Wilmington 7/11/2018
779-258 Onvoy Herscher 8/27/2018
779-259 Onvoy Manteno 8/27/2018
779-260 New Cingular Wireless PCS Joliet 10/8/2018
779-261 Onvoy Spectrum Fairbury 11/30/2018
779-262 Onvoy Oglesby 12/5/2018
779-263 Teleport Communications America Plainfield 1/2/2018
779-264 New Cingular Wireless PCS Kankakee 10/7/2019
779-265 Level 3 Communications Mchenry 10/8/2019
779-266 Telnyx Lanark 12/9/2019
779-267 New Cingular Wireless PCS Joliet 1/17/2020
779-268 Teleport Communications America St Anne 2/6/2020
779-269 MCIMetro Access Transmission Services Rockford 2/10/2020
779-270 MCIMetro Access Transmission Services De Kalb 2/19/2020
779-271 Csc Wireless Lanark 4/29/2020
779-272 Peerless Network Of Illinois Rockford 5/1/2020
779-273 Onvoy Danforth 5/28/2020
779-274 Csc Wireless Rockford 6/26/2020
779-275 Stratus Networks Rockford 7/28/2020
779-276 Stratus Networks De Kalb 7/28/2020
779-277 Telnyx Flanagan 8/12/2020
779-278 Stratus Networks Grand Ridge 3/18/2021
779-279 New Cingular Wireless PCS Joliet 10/29/2008
779-280 Stratus Networks Donovan 8/25/2020
779-281 Onvoy Toluca 8/12/2020
779-282 Stratus Networks Martinton 8/25/2020
779-283 Stratus Networks Richmond 8/25/2020
779-284 Stratus Networks Sheldon 8/25/2020
779-285 Stratus Networks Sheridan 8/25/2020
779-286 Stratus Networks Spring Grove 8/25/2020
779-287 Onvoy Union 3/24/2016
779-288 Onvoy Beaverville 6/2/2021
779-289 Nuso South Beloit 9/1/2020
779-290 Stratus Networks Milford 9/2/2020
779-291 Stratus Networks Wonder Lake 9/4/2020
779-292 Stratus Networks Onarga 9/4/2020
779-293 Stratus Networks New Lenox 9/4/2020
779-294 Stratus Networks Harding 9/4/2020
779-295 Stratus Networks Mazon 9/4/2020
779-296 Stratus Networks Long Point 9/8/2020
779-297 Ip Horizon Sterling 9/15/2020
779-298 Ip Horizon Forrest 9/15/2020
779-299 Stratus Networks Wenona 9/17/2020
779-300-XXXX --- 779-399-XXXX
NPANXX Carrier1 Area Served2 Date3
779-300 T-Mobile USA Rockford 2/17/2011
779-301 T-Mobile USA Kankakee 6/11/2014
779-302 Cellco Partnership Woodstock 2/27/2015
779-303 Telnyx Plainfield N/A
779-304 Stratus Networks Rutland 9/17/2020
779-305 Stratus Networks Reddick 9/17/2020
779-306 Stratus Networks Pontiac 9/17/2020
779-307 Stratus Networks Lostant 9/17/2020
779-308 Stratus Networks Chatsworth 9/17/2020
779-309 Dish Wireless South Sharon 06/13/2023
779-310 Stratus Networks New Milford 9/17/2020
779-312 Cellco Partnership Woodstock 06/21/2023
779-313 Stratus Networks Cherry Valley 9/17/2020
779-314 Stratus Networks Rock Cut 9/17/2020
779-315 Stratus Networks Roscoe 9/17/2020
779-316 Stratus Networks Creston 9/17/2020
779-317 Stratus Networks Kirkland 9/17/2020
779-318 Stratus Networks Malta 9/17/2020
779-319 Stratus Networks Maple Park 9/17/2020
779-320 Stratus Networks Monroe Center 9/17/2020
779-321 Stratus Networks Shabbona 9/17/2020
779-322 Stratus Networks Thomas 9/17/2020
779-323 Ip Horizon Rockford 9/30/2020
779-324 Bandwidth.com Clec Frankfort 8/17/2010
779-325 Stratus Networks Franklin Grove 11/25/2020
779-326 Stratus Networks Dwight 12/10/2020
779-327 Onvoy Warren 6/10/2021
779-328 Onvoy Hanover 6/10/2021
779-329 T-Mobile USA Mendota 6/10/2021
779-330 Nuso Belvidere 6/22/2021
779-331 New Cingular Wireless PCS Kankakee 07/18/2023
779-332 Onvoy Durand 6/10/2021
779-333 Onvoy Frankfort 4/11/2013
779-334 Level 3 Communications De Kalb 11/4/2020
779-335 Telnyx Rockford 6/23/2021
779-336 Fractel Woodstock 2/10/2021
779-337 Onvoy Woodland 6/24/2021
779-338 Onvoy Crescent City 6/24/2021
779-339 New Cingular Wireless PCS Frankfort 10/19/2021
779-340 Bandwidth.com Clec Coal City 11/22/2021
779-341 New Cingular Wireless PCS Joliet 12/29/2021
779-342 Onvoy Dwight 7/14/2021
779-343 Onvoy German Valley 11/4/2021
779-344 Onvoy Seward 11/4/2021
779-345 Fractel Byron 7/27/2020
779-346 Fractel Capron 9/18/2020
779-347 Onvoy Winslow 11/4/2021
779-348 Teleport Communications America Rockford 6/13/2007
779-349 T-Mobile USA Spring Valley 1/11/2022
779-350 New Cingular Wireless PCS Momence 10/3/2022
779-351 Paetec Itel Rockford 2/25/2022
779-352 Twilio International Waterman 1/28/2022
779-353 Level 3 Communications Forreston 3/31/2022
779-354 Level 3 Communications Davis 3/31/2022
779-355 Level 3 Communications Harmon 3/31/2022
779-356 Fractel Crystal Lake 7/14/2020
779-357 New Cingular Wireless PCS Leaf River 4/12/2022
779-358 Bandwidth.com Clec Plainfield 10/18/2022
779-359 Nuso Belvidere 11/15/2022
779-360 New Cingular Wireless PCS Momence 12/29/2022
779-361 Cellco Partnership Kankakee 01/03/2023
779-362 Onvoy Fairbury 01/19/2023
779-363 Nuso Rockford 02/08/2023
779-364 Nuso Streator 02/08/2023
779-365 Nuso De Kalb 02/15/2023
779-366 HD Carrier Rockford 03/08/2023
779-367 Nuso Sycamore 03/10/2023
779-368 Comcast IP Phone New Milford 8/21/2007
779-369 New Cingular Wireless PCS Momence 03/16/2023
779-370 Dish Wireless Rockford 04/18/2023
779-371 New Cingular Wireless PCS Momence 07/18/2023
779-372 T-Mobile USA Dixon 07/20/2023
779-373 Callworks Corporation Rockford 07/20/2023
779-374 Cellco Partnership Joliet 07/26/2023
779-375 New Cingular Wireless PCS Joliet 07/26/2023
779-376 Commio Grant Park 08/11/2023
779-377 Skye Telecom South Beloit 9/13/2021
779-378 Onvoy Mchenry 08/18/2023
779-379 New Cingular Wireless PCS Joliet 10/29/2008
779-380 New Cingular Wireless PCS Momence 09/06/2023
779-381 Cellco Partnership La Salle 10/19/2023
779-382 Charter IP Enabled Services Genoa 5/7/2007
779-383 New Cingular Wireless PCS Momence 10/30/2023
779-384 T-Mobile USA Harvard 01/09/2024
779-385 New Cingular Wireless PCS Momence 02/06/2024
779-386 T-Mobile USA Princeton 02/08/2024
779-387 Onvoy Poplar Grove 03/21/2024
779-388 Onvoy Spectrum Crystal Lake 03/22/2024
779-389 Onvoy Garden Prairie 4/19/2021
779-390 T-Mobile USA Lockport 03/27/2024
779-391 Onvoy Spectrum New Lenox 03/29/2024
779-392 Onvoy Spectrum Oglesby 03/29/2024
779-393 Onvoy Spectrum Watseka 03/29/2024
779-394 Onvoy Spectrum Wellington 03/29/2024
779-395 Onvoy Minooka 04/02/2024
779-396 Cellco Partnership Woodstock 04/05/2024
779-397 Onvoy Spectrum Cabery 05/03/2023
779-398 Onvoy Pontiac 05/14/2024
779-399 Fractel Kinsman 1/8/2021
779-400-XXXX --- 779-499-XXXX
NPANXX Carrier1 Area Served2 Date3
779-400 Ymax Communications Corp. De Kalb 2/17/2011
779-401 New Cingular Wireless PCS Kankakee 04/11/2024
779-402 New Cingular Wireless PCS Momence 04/30/2024
779-403 T-Mobile USA Mchenry 06/25/2024
779-404 Onvoy Rochelle 07/08/2024
779-405 Leap Telecom Rockford 09/19/2024
779-406 New Cingular Wireless PCS Momence 10/21/2024
779-407 New Cingular Wireless PCS Momence 01/14/2025
779-408 Cellco Partnership Joliet 01/21/2025
779-409 MetroPCS Elizabeth 02/28/2025
779-410 Twilio International Stockton 3/30/2021
779-412 New Cingular Wireless PCS Momence 03/07/2025
779-413 United States Cellular Freeport 03/21/2025
779-414 United States Cellular Freeport 03/21/2025
779-415 United States Cellular Freeport 03/21/2025
779-416 United States Cellular Freeport 03/21/2025
779-417 United States Cellular Freeport 03/21/2025
779-418 United States Cellular Freeport 03/21/2025
779-419 United States Cellular Freeport 03/21/2025
779-420 United States Cellular Freeport 03/21/2025
779-421 United States Cellular Freeport 03/21/2025
779-422 Cellco Partnership De Kalb 04/22/2025
779-423 Comcast IP Phone Rockford 8/8/2007
779-424 Bandwidth.com Clec Rockford 06/10/2025
779-425 AT&T Enterprises Forrest 07/08/2025
779-426 Ton80 Communications Manhattan 1/13/2022
779-427 New Cingular Wireless PCS Momence 07/10/2025
779-428 Wavenation Rockford 07/21/2025
779-429 AT&T Enterprises Wilmington 11/13/2008
779-430 Wavenation Sterling 07/21/2025
779-431 T-Mobile USA De Kalb 08/19/2025
779-432 Mtco Communications Sheffield 3/27/2007
779-433 Bandwidth.com Clec Dixon 09/08/2025
779-434 New Cingular Wireless PCS Joliet 11/14/2025
779-435 Illinois Bell Tel Co Joliet 11/13/2006
779-444 Bandwidth.com Clec Wonder Lake 8/17/2010
779-445 MetroPCS Lockport 11/8/2022
779-456 T-Mobile USA Joliet 1/9/2008
779-463 Ton80 Communications Morris 3/23/2022
779-465 Fractel Braidwood 10/10/2019
779-466 Ton80 Communications Emington 1/26/2022
779-475 Charter IP Enabled Services South Beloit 3/27/2007
779-479 Onvoy Graymont 4/18/2021
779-499 Skye Telecom Freeport 9/13/2021
779-500-XXXX --- 779-599-XXXX
NPANXX Carrier1 Area Served2 Date3
779-500 Teleport Communications America Rockford 3/16/2011
779-513 Centurylink Communications Rockford 10/16/2015
779-529 Bandwidth.com Clec Manteno 8/17/2010
779-537 Cellco Partnership Rockford 3/27/2007
779-545 Comcast IP Phone Mount Morris 8/8/2007
779-548 Bandwidth.com Clec Marengo 8/16/2010
779-552 Digital Network Access Communications Belvidere 6/4/2007
779-577 Skye Telecom Rockford 9/13/2021
779-579 Onvoy Kempton 4/18/2021
779-599 Fractel Paw Paw 7/14/2020
779-600-XXXX --- 779-699-XXXX
NPANXX Carrier1 Area Served2 Date3
779-600 Fractel Cissna Park 8/8/2019
779-601 Bandwidth.com Clec La Salle 9/10/2014
779-624 Ton80 Communications Momence 1/13/2022
779-625 Ton80 Communications Woodstock 2/23/2022
779-639 Ton80 Communications Mchenry 1/13/2022
779-666 Onvoy Rockford 10/3/2017
779-675 Ton80 Communications Ohio 1/13/2022
779-677 Fractel Freeport 7/27/2020
779-678 Fractel Rockford 1/12/2021
779-679 Onvoy Magnolia 4/18/2021
779-696 Paetec Itel Rockford 8/18/2010
779-699 Fractel South Beloit 7/17/2020
779-701-XXXX --- 779-799-XXXX
NPANXX Carrier1 Area Served2 Date3
779-701 Bandwidth.com Clec Kankakee 1/28/2015
779-702 T-Mobile USA Joliet 6/11/2014
779-703 T-Mobile USA Joliet 10/7/2013
779-704 MCIMetro Access Transmission Services Mchenry 10/31/2013
779-706 Cellco Partnership Sandwich 2/24/2015
779-707 Bandwidth.com Clec Joliet 4/21/2015
779-710 Onvoy Rockford 3/18/2021
779-713 T-Mobile USA Woodstock 5/22/2015
779-717 Peerless Network Of Illinois Spring Valley 10/15/2015
779-722 Fractel Ashton 9/18/2020
779-729 Onvoy Lena 4/13/2021
779-732 Fractel La Salle 2/10/2021
779-739 Twilio International Forrest 2/14/2022
779-746 Ton80 Communications Cissna Park 1/13/2022
779-749 Onvoy Steward 4/13/2021
779-758 Fractel Joliet 10/11/2019
779-759 Onvoy Sycamore 4/13/2021
779-766 Fractel Depue 7/14/2020
779-770 New Cingular Wireless PCS Rockford 11/18/2008
779-771 New Cingular Wireless PCS Rockford 11/18/2008
779-772 New Cingular Wireless PCS Rockford 11/18/2008
779-774 Onvoy Rockford 2/1/2012
779-775 Skye Telecom De Kalb 9/13/2021
779-777 New Cingular Wireless PCS De Kalb 10/22/2008
779-778 Onvoy Winnebago 5/28/2020
779-779 Onvoy Chadwick 08/21/2025
779-783 Ton80 Communications Stockland 1/13/2022
779-788 Fractel Pecatonica 1/28/2021
779-789 Onvoy Rockton 4/19/2021
779-790 Commio Sterling 04/12/2023
779-797 Terra Nova Telecom Rockford 9/23/2021
779-799 Fractel Coleta 7/27/2020
779-800-XXXX --- 779-899-XXXX
NPANXX Carrier1 Area Served2 Date3
779-800 Onvoy Crystal Lake 4/11/2013
779-801 Teleport Communications America Kankakee 9/7/2016
779-803 Bandwidth.com Clec New Lenox 8/16/2013
779-804 MCIMetro Access Transmission Services Pontiac 2/24/2015
779-809 MetroPCS Fulton 3/28/2022
779-832 Ton80 Communications Cedar Point 1/13/2022
779-837 Ton80 Communications Elwood 1/7/2022
779-855 Terra Nova Telecom Forrest 3/31/2021
779-861 Cellco Partnership Dixon 5/26/2010
779-867 Commio Rockford 4/12/2021
779-875 T-Mobile USA Joliet 7/12/2007
779-877 Fractel Verona 7/14/2020
779-879 Onvoy Streator 4/18/2021
779-888 Onvoy Rockford 1/28/2015
779-895 Twilio International Rockford 2/1/2022
779-899 Fractel Lisbon 7/14/2020
779-900-XXXX --- 779-999-XXXX
NPANXX Carrier1 Area Served2 Date3
779-900 Fractel Frankfort 9/17/2019
779-901 Bandwidth.com Clec Marengo 4/30/2015
779-902 Onvoy Spectrum De Kalb 3/19/2021
779-903 Onvoy Braidwood 7/29/2013
779-904 Onvoy Spectrum Freeport 3/24/2021
779-910 Onvoy De Kalb 3/18/2021
779-915 T-Mobile USA Woodstock 11/16/2016
779-922 Fractel Hooppole 7/27/2020
779-927 Ton80 Communications Marengo 1/13/2022
779-931 Frontier North Sandwich 10/27/2016
779-933 Fractel Hinckley 7/27/2020
779-939 New Cingular Wireless PCS Joliet 2/3/2016
779-946 Fractel Granville 7/14/2020
779-970 Cellco Partnership Rockford 9/14/2015
779-977 Fractel Harvard 7/14/2020
779-978 United States Cellular Sandwich 6/4/2015
779-979 Onvoy Piper City 4/19/2021
779-990 Commio Forrest 4/12/2021
779-991 Onvoy Leland 8/12/2020
779-994 Peerless Network Of Illinois Crystal Lake 4/10/2013
779-997 Ton80 Communications Plattville 1/13/2022
779-999 Peerless Network Of Illinois Newark 9/24/2010
  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 779

City1 County Time Zone1
Alden McHenry C
Amboy Lee C
Ancona Livingston C
Apple River Jo Daviess C
Arlington Bureau C
Aroma Park Kankakee C
Ashkum Iroquois C
Ashton Lee C
Baileyville Ogle C
Beaverville Iroquois C
Belvidere Boone C
Blackstone Livingston C
Bonfield Kankakee C
Bourbonnais Kankakee C
Braceville Grundy C
Bradley Kankakee C
Braidwood Will C
Buckingham Kankakee C
Bureau Bureau C
Byron Ogle C
Cabery Ford C
Caledonia Boone C
Campus Livingston C
Capron Boone C
Cedar Point La Salle C
Cedarville Stephenson C
Chadwick Carroll C
Chana Ogle C
Channahon Will C
Chatsworth Livingston C
Chebanse Iroquois C
Chenoa McLean C
Cherry Bureau C
Cherry Valley Winnebago C
Cissna Park Iroquois C
Clare Dekalb C
Claytonville Iroquois C
Clifton Iroquois C
Coal City Grundy C
Compton Lee C
Cornell Livingston C
Cortland Dekalb C
Crescent City Iroquois C
Creston Ogle C
Crystal Lake McHenry C
Cullom Livingston C
Dakota Stephenson C
Dalzell Bureau C
Dana La Salle C
Danforth Iroquois C
Davis Stephenson C
Davis Junction Ogle C
Deer Grove Whiteside C
Dekalb Dekalb C
Depue Bureau C
Dixon Lee C
Donovan Iroquois C
Dover Bureau C
Durand Winnebago C
Dwight Livingston C
Earlville La Salle C
East Dubuque Jo Daviess C
Eldena Lee C
Eleroy Stephenson C
Elizabeth Jo Daviess C
Elwood Will C
Emington Livingston C
Esmond Dekalb C
Essex Kankakee C
Fairbury Livingston C
Flanagan Livingston C
Forrest Livingston C
Forreston Ogle C
Frankfort Will C
Franklin Grove Lee C
Freeport Stephenson C
Fulton Whiteside C
Galena Jo Daviess C
Galt Whiteside C
Garden Prairie Boone C
Gardner Grundy C
Genoa Dekalb C
German Valley Stephenson C
Gilman Iroquois C
Goodwine Iroquois C
Grand Ridge La Salle C
Grant Park Kankakee C
Granville Putnam C
Graymont Livingston C
Hanover Jo Daviess C
Harmon Lee C
Harvard McHenry C
Hebron McHenry C
Hennepin Putnam C
Herscher Kankakee C
Hinckley Dekalb C
Holcomb Ogle C
Homer Glen Will C
Hooppole Henry C
Hopkins Park Kankakee C
Iroquois Iroquois C
Joliet Will C
Kankakee Kankakee C
Kasbeer Bureau C
Kempton Ford C
Kent Stephenson C
Kingston Dekalb C
Kinsman Grundy C
Kirkland Dekalb C
La Moille Bureau C
La Salle La Salle C
Ladd Bureau C
Lanark Carroll C
Leaf River Ogle C
Lee Lee C
Lee Center Lee C
Leland La Salle C
Lena Stephenson C
Leonore La Salle C
Lindenwood Ogle C
Lockport Will C
Long Point Livingston C
Lostant La Salle C
Loves Park Winnebago C
Lyndon Whiteside C
Machesney Park Winnebago C
Magnolia Putnam C
Malden Bureau C
Malta Dekalb C
Manhattan Will C
Manlius Bureau C
Manteno Kankakee C
Maple Park Kane C
Marengo McHenry C
Mark Putnam C
Marseilles La Salle C
Martinton Iroquois C
Mazon Grundy C
Mc Connell Stephenson C
Mc Nabb Putnam C
McHenry McHenry C
Mendota La Salle C
Milford Iroquois C
Milledgeville Carroll C
Millington Kendall C
Minooka Grundy C
Momence Kankakee C
Monroe Center Ogle C
Morris Grundy C
Morrison Whiteside C
Mount Carroll Carroll C
Mount Morris Ogle C
Nachusa Lee C
New Bedford Bureau C
New Lenox Will C
Newark Kendall C
Nora Jo Daviess C
Odell Livingston C
Oglesby La Salle C
Ohio Bureau C
Onarga Iroquois C
Orangeville Stephenson C
Oregon Ogle C
Ottawa La Salle C
Papineau Iroquois C
Paw Paw Lee C
Pearl City Stephenson C
Pecatonica Winnebago C
Peru La Salle C
Piper City Ford C
Plainfield Will C
Polo Ogle C
Pontiac Livingston C
Poplar Grove Boone C
Princeton Bureau C
Prophetstown Whiteside C
Putnam Putnam C
Ransom La Salle C
Reddick Kankakee C
Richmond McHenry C
Ridott Stephenson C
Ringwood McHenry C
Rochelle Ogle C
Rock City Stephenson C
Rock Falls Whiteside C
Rockford Winnebago C
Rockton Winnebago C
Romeoville Will C
Roscoe Winnebago C
Rutland La Salle C
Sandwich Dekalb C
Saunemin Livingston C
Savanna Carroll C
Scales Mound Jo Daviess C
Seatonville Bureau C
Seneca La Salle C
Serena La Salle C
Seward Winnebago C
Shabbona Dekalb C
Shannon Carroll C
Sheffield Bureau C
Sheldon Iroquois C
Sheridan La Salle C
Shirland Winnebago C
Somonauk Dekalb C
South Beloit Winnebago C
South Wilmington Grundy C
Spring Grove McHenry C
Spring Valley Bureau C
St Anne Kankakee C
Standard Putnam C
Sterling Whiteside C
Steward Lee C
Stillman Valley Ogle C
Stockland Iroquois C
Stockton Jo Daviess C
Strawn Livingston C
Streator La Salle C
Sublette Lee C
Sycamore Dekalb C
Tampico Whiteside C
Thomson Carroll C
Tiskilwa Bureau C
Toluca Marshall C
Tonica La Salle C
Triumph La Salle C
Troy Grove La Salle C
Union McHenry C
Union Hill Kankakee C
Utica La Salle C
Van Orin Bureau C
Verona Grundy C
Walnut Bureau C
Warren Jo Daviess C
Waterman Dekalb C
Watseka Iroquois C
Wedron La Salle C
Wellington Iroquois C
Wenona Marshall C
West Brooklyn Lee C
Wilmington Will C
Winnebago Winnebago C
Winslow Stephenson C
Wonder Lake McHenry C
Woodland Iroquois C
Woodstock McHenry C
Woosung Ogle C
Wyanet Bureau C
  1. Listed above are most places served by USA area code 779. 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. C stands for Central Time (currently ).
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