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Area Code 779 Information and Location Details

Area code 779 serves the state of Illinois. This area code was assigned on February 6th, 2004. On March 17th, 2007 it went into service. 779 is a General Purpose Code. 779 service area does overlap with 815 area codes. Dialing pattern for local calls within the same NPA (area code) is 1+10D.

Area Code 779 Has 101 Exchanges

Exchange City
779-200 Rockford
779-201 La Salle
779-202 Galena
779-203 Rockford
779-204 Verona
779-205 Joliet
779-206 Joliet
779-207 Rockford
779-208 Rockford
779-209 Sandwich
779-210 Rockford
779-212 Dekalb
779-213 Oglesby
779-214 Galena
779-215 Tonica
779-216 Frankfort
779-218 Watseka
779-220 Crystal Lake
779-221 Rockford
779-222 Sycamore
779-223 Onarga
779-225 Joliet
779-226 Polo
779-227 Joliet
779-228 Mazon
779-229 Depue
779-230 Joliet
779-231 Joliet
779-232 Wilmington
779-233 Joliet
779-234 Plainfield
779-235 Crescent City
779-236 Kankakee
779-237 Streator
779-238 Rockford
779-239 Princeton
779-240 Kankakee
779-241 Morris
779-245 Sterling
779-248 Galena
779-251 Dixon
779-252 Plainfield
779-253 South Beloit
779-254 Frankfort
779-279 Joliet
779-287 Union
779-300 Rockford
779-301 Kankakee
779-302 Woodstock
779-303 Plainfield
779-324 Frankfort
779-333 Frankfort
779-348 Rockford
779-379 Joliet
779-382 Genoa
779-400 Dekalb
779-423 Rockford
779-429 Wilmington
779-432 Sheffield
779-435 Joliet
779-444 Wonder Lake
779-456 Joliet
779-475 South Beloit
779-500 Rockford
779-513 Rockford
779-529 Manteno
779-537 Rockford
779-545 Mount Morris
779-548 Marengo
779-552 Belvidere
779-601 La Salle
779-696 Rockford
779-701 Kankakee
779-702 Joliet
779-703 Joliet
779-704 Mchenry
779-706 Sandwich
779-707 Joliet
779-713 Woodstock
779-717 Spring Valley
779-770 Rockford
779-771 Rockford
779-772 Rockford
779-774 Rockford
779-777 Dekalb
779-800 Crystal Lake
779-801 Kankakee
779-803 New Lenox
779-804 Pontiac
779-861 Dixon
779-875 Joliet
779-888 Rockford
779-901 Marengo
779-903 Braidwood
779-915 Woodstock
779-931 Sandwich
779-939 Joliet
779-970 Rockford
779-978 Sandwich
779-994 Crystal Lake
779-999 Newark