779 Area Code
Area code 779 generally covers Rockford, Joliet, and Dekalb in the U.S. State of Illinois.
Top cities in area code 779
| City | Prefixes |
|---|---|
| Rockford, IL | 18.1% |
| Joliet, IL | 10.1% |
| Dekalb, IL | 7% |
| Frankfort, IL | 3% |
| Kankakee, IL | 3% |
| Woodstock, IL | 2.5% |
| Crystal Lake, IL | 2% |
| South Beloit, IL | 2% |
| Plainfield, IL | 2% |
| Sandwich, IL | 2% |
Top telephone carriers in area code 779
| Carrier | Prefixes |
|---|---|
| Stratus Networks | 17.1% |
| Fractel | 12.1% |
| New Cingular Wireless | 8% |
| Onvoy | 7.5% |
| Verizon | 7% |
| T-Mobile | 6.5% |
| Bandwidth.com | 5.5% |
| Peerless Network Of Illinois | 4.5% |
| Teleport Communications America | 4% |
| Sprint Spectrum | 2.5% |
Area code 779 has 199 prefixes
| Prefix | Primary City | Usage | |
|---|---|---|---|
| 779-200 | Rockford | Wireless | Verizon |
| 779-201 | La Salle | Wireless | Verizon |
| 779-202 | Galena | Landline | Teleport Communications America |
| 779-203 | Rockford | Wireless | Sprint Spectrum |
| 779-204 | Verona | Landline | Onvoy |
| 779-205 | Joliet | Wireless | New Cingular Wireless |
| 779-206 | Joliet | Wireless | Verizon |
| 779-207 | Rockford | Wireless | Verizon |
| 779-208 | Rockford | Wireless | Verizon |
| 779-209 | Sandwich | Landline | Peerless Network Of Illinois |
| 779-210 | Rockford | Landline | AT&T |
| 779-212 | Dekalb | Wireless | Brightlink Communications |
| 779-213 | Oglesby | Landline | Peerless Network Of Illinois |
| 779-214 | Galena | Landline | Mediacom Telephony Of Illinois |
| 779-215 | Tonica | Landline | Local Access |
| 779-216 | Frankfort | Landline | Peerless Network Of Illinois |
| 779-218 | Watseka | Landline | Peerless Network Of Illinois |
| 779-220 | Crystal Lake | Landline | Bandwidth.com |
| 779-221 | Rockford | Landline | Onvoy |
| 779-222 | Dekalb | Landline | Level 3 Communications |
| 779-223 | Onarga | Landline | Onvoy |
| 779-225 | Joliet | Wireless | Verizon |
| 779-226 | Polo | Landline | Comcast Ip Phone |
| 779-227 | Joliet | Wireless | T-Mobile |
| 779-228 | Mazon | Landline | Peerless Network Of Illinois |
| 779-229 | Granville | Landline | Comcast Phone Of Illinois |
| 779-230 | Joliet | Wireless | New Cingular Wireless |
| 779-231 | Joliet | Landline | Mcimetro Access Transmission Services |
| 779-232 | Wilmington | Landline | Teleport Communications America |
| 779-233 | Joliet | Wireless | Sprint Spectrum |
| 779-234 | Plainfield | Landline | Local Access |
| 779-235 | Crescent City | Wireless | AT&T |
| 779-236 | Kankakee | Wireless | Sprint Spectrum |
| 779-237 | Ancona | Wireless | Verizon |
| 779-238 | Rockford | Wireless | T-Mobile |
| 779-239 | Princeton | Wireless | New Cingular Wireless |
| 779-240 | Kankakee | Wireless | T-Mobile |
| 779-241 | Morris | Wireless | T-Mobile |
| 779-242 | Joliet | Wireless | New Cingular Wireless |
| 779-243 | Frankfort | Wireless | New Cingular Wireless |
| 779-244 | Mchenry | Wireless | New Cingular Wireless |
| 779-245 | Sterling | Wireless | T-Mobile |
| 779-246 | Rochelle | Landline | Teleport Communications America |
| 779-247 | Woodstock | Wireless | Verizon |
| 779-248 | Galena | Landline | CenturyLink Communications |
| 779-249 | Dwight | Wireless | Verizon |
| 779-250 | Sterling | Wireless | T-Mobile |
| 779-251 | Dixon | Landline | CenturyLink Communications |
| 779-252 | Plainfield | Landline | Metro Fibernet |
| 779-253 | South Beloit | Wireless | T-Mobile |
| 779-254 | Frankfort | Landline | Comcast Phone Of Illinois |
| 779-255 | Dekalb | Landline | Metro Fibernet |
| 779-256 | Rockford | Landline | Vonage America |
| 779-257 | Wilmington | Landline | Bandwidth.com |
| 779-258 | Herscher | Landline | Onvoy |
| 779-259 | Manteno | Landline | Onvoy |
| 779-260 | Joliet | Wireless | New Cingular Wireless |
| 779-261 | Fairbury | Landline | Onvoy Spectrum |
| 779-262 | Oglesby | Landline | Onvoy |
| 779-263 | Plainfield | Landline | Teleport Communications America |
| 779-264 | Kankakee | Wireless | New Cingular Wireless |
| 779-265 | Mchenry | Landline | Level 3 Communications |
| 779-266 | Lanark | Landline | Telnyx |
| 779-267 | Joliet | Wireless | New Cingular Wireless |
| 779-268 | Saint Anne | Landline | Teleport Communications America |
| 779-269 | Rockford | Landline | Mcimetro Access Transmission Services |
| 779-270 | Dekalb | Landline | Mcimetro Access Transmission Services |
| 779-271 | Lanark | Wireless | Csc Wireless |
| 779-272 | Rockford | Landline | Peerless Network Of Illinois |
| 779-273 | Danforth | Landline | Onvoy |
| 779-274 | Rockford | Wireless | Csc Wireless |
| 779-275 | Rockford | Landline | Stratus Networks |
| 779-276 | Dekalb | Landline | Stratus Networks |
| 779-277 | Flanagan | Landline | Level 3 Communications |
| 779-279 | Joliet | Wireless | New Cingular Wireless |
| 779-280 | Donovan | Landline | Stratus Networks |
| 779-281 | Toluca | Landline | Radiantiq |
| 779-282 | Martinton | Landline | Stratus Networks |
| 779-283 | Richmond | Landline | Stratus Networks |
| 779-284 | Sheldon | Landline | Stratus Networks |
| 779-285 | Sheridan | Landline | Stratus Networks |
| 779-286 | Spring Grove | Landline | Stratus Networks |
| 779-287 | Union | Landline | Onvoy |
| 779-289 | South Beloit | Landline | Brightlink Communications |
| 779-290 | Milford | Landline | Stratus Networks |
| 779-291 | Wonder Lake | Landline | Stratus Networks |
| 779-292 | Onarga | Landline | Stratus Networks |
| 779-293 | New Lenox | Landline | Stratus Networks |
| 779-294 | Earlville | Landline | Stratus Networks |
| 779-295 | Mazon | Landline | Stratus Networks |
| 779-296 | Long Point | Landline | Stratus Networks |
| 779-297 | Dixon | Landline | Ip Horizon |
| 779-298 | Forrest | Landline | Ip Horizon |
| 779-299 | Wenona | Landline | Stratus Networks |
| 779-300 | Rockford | Wireless | Sprint Spectrum |
| 779-301 | Kankakee | Wireless | T-Mobile |
| 779-302 | Woodstock | Wireless | Verizon |
| 779-303 | Plainfield | Landline | Telnyx |
| 779-304 | Rutland | Landline | Stratus Networks |
| 779-305 | Reddick | Landline | Stratus Networks |
| 779-306 | Pontiac | Landline | Stratus Networks |
| 779-307 | Lostant | Landline | Stratus Networks |
| 779-308 | Chatsworth | Landline | Stratus Networks |
| 779-310 | Rockford | Landline | Stratus Networks |
| 779-313 | Rockford | Landline | Stratus Networks |
| 779-314 | Rockford | Landline | Stratus Networks |
| 779-315 | Rockford | Landline | Stratus Networks |
| 779-316 | Dekalb | Landline | Stratus Networks |
| 779-317 | Dekalb | Landline | Stratus Networks |
| 779-318 | Dekalb | Landline | Stratus Networks |
| 779-319 | Dekalb | Landline | Stratus Networks |
| 779-320 | Monroe Center | Landline | Stratus Networks |
| 779-321 | Dekalb | Landline | Stratus Networks |
| 779-322 | Hooppole | Landline | Stratus Networks |
| 779-323 | Rockford | Landline | Ip Horizon |
| 779-324 | Frankfort | Landline | Bandwidth.com |
| 779-325 | Ashton | Landline | Stratus Networks |
| 779-326 | Dwight | Landline | Stratus Networks |
| 779-333 | Frankfort | Landline | Onvoy |
| 779-334 | Dekalb | Landline | Level 3 Communications |
| 779-336 | Woodstock | Landline | Fractel |
| 779-345 | Rockford | Landline | Fractel |
| 779-346 | Capron | Landline | Fractel |
| 779-348 | Rockford | Landline | Teleport Communications America |
| 779-356 | Crystal Lake | Landline | Fractel |
| 779-368 | Rockford | Landline | Comcast Ip Phone |
| 779-379 | Joliet | Wireless | New Cingular Wireless |
| 779-382 | Genoa | Landline | Charter Fiberlink |
| 779-399 | Kinsman | Landline | Fractel |
| 779-400 | Dekalb | Landline | Ymax Communications |
| 779-423 | Rockford | Landline | Comcast Ip Phone |
| 779-429 | Wilmington | Landline | AT&T |
| 779-432 | Sheffield | Landline | Mtco Communications |
| 779-435 | Joliet | Landline | Illinois Bell Tel |
| 779-444 | Wonder Lake | Landline | Bandwidth.com |
| 779-456 | Joliet | Wireless | T-Mobile |
| 779-465 | Braidwood | Landline | Fractel |
| 779-475 | South Beloit | Landline | Charter Fiberlink |
| 779-500 | Rockford | Landline | Teleport Communications America |
| 779-513 | Rockford | Landline | CenturyLink Communications |
| 779-529 | Manteno | Landline | Bandwidth.com |
| 779-537 | Rockford | Wireless | Verizon |
| 779-545 | Mount Morris | Landline | Comcast Ip Phone |
| 779-548 | Marengo | Landline | Bandwidth.com |
| 779-552 | Belvidere | Landline | Digital Network Access Communications |
| 779-599 | Paw Paw | Landline | Fractel |
| 779-600 | Cissna Park | Landline | Fractel |
| 779-601 | La Salle | Landline | Bandwidth.com |
| 779-666 | Rockford | Landline | Onvoy |
| 779-677 | Freeport | Landline | Fractel |
| 779-678 | Rockford | Landline | Fractel |
| 779-696 | Rockford | Landline | Mcleodusa Telecommunication Services |
| 779-699 | South Beloit | Landline | Fractel |
| 779-701 | Kankakee | Landline | Bandwidth.com |
| 779-702 | Joliet | Wireless | T-Mobile |
| 779-703 | Joliet | Wireless | T-Mobile |
| 779-704 | Mchenry | Landline | Mcimetro Access Transmission Services |
| 779-706 | Sandwich | Wireless | Verizon |
| 779-707 | Joliet | Landline | Bandwidth.com |
| 779-710 | Rockford | Landline | Radiantiq |
| 779-713 | Woodstock | Wireless | T-Mobile |
| 779-717 | Spring Valley | Landline | Peerless Network Of Illinois |
| 779-722 | Ashton | Landline | Fractel |
| 779-732 | La Salle | Landline | Fractel |
| 779-758 | Joliet | Landline | Fractel |
| 779-766 | Granville | Landline | Fractel |
| 779-770 | Rockford | Wireless | New Cingular Wireless |
| 779-771 | Rockford | Wireless | New Cingular Wireless |
| 779-772 | Rockford | Wireless | New Cingular Wireless |
| 779-774 | Rockford | Landline | Tds Metrocom |
| 779-777 | Dekalb | Wireless | New Cingular Wireless |
| 779-778 | Rockford | Landline | Onvoy |
| 779-788 | Pecatonica | Landline | Fractel |
| 779-799 | Chadwick | Landline | Fractel |
| 779-800 | Crystal Lake | Landline | Onvoy |
| 779-801 | Kankakee | Landline | Teleport Communications America |
| 779-803 | New Lenox | Landline | Bandwidth.com |
| 779-804 | Pontiac | Landline | Mcimetro Access Transmission Services |
| 779-861 | Dixon | Wireless | Verizon |
| 779-875 | Joliet | Wireless | Sprint Spectrum |
| 779-877 | Verona | Landline | Fractel |
| 779-888 | Rockford | Landline | Onvoy |
| 779-899 | Newark | Landline | Fractel |
| 779-900 | Frankfort | Landline | Fractel |
| 779-901 | Marengo | Landline | Bandwidth.com |
| 779-903 | Braidwood | Landline | Onvoy |
| 779-910 | Dekalb | Landline | Radiantiq |
| 779-915 | Woodstock | Wireless | T-Mobile |
| 779-922 | Hooppole | Landline | Fractel |
| 779-931 | Sandwich | Landline | Frontier North |
| 779-933 | Hinckley | Landline | Fractel |
| 779-939 | Joliet | Wireless | New Cingular Wireless |
| 779-946 | Granville | Landline | Fractel |
| 779-970 | Rockford | Wireless | Verizon |
| 779-977 | Harvard | Landline | Fractel |
| 779-978 | Sandwich | Wireless | United States Cellular |
| 779-991 | Leland | Landline | Onvoy |
| 779-994 | Crystal Lake | Landline | Peerless Network Of Illinois |
| 779-999 | Newark | Landline | Peerless Network Of Illinois |