779 area

This area code used across 17 counties and 43 cities. The area code is used in the state of Illinois.

Counties with "779" area code

  • Iroquois
  • Mchenry
  • Bureau
  • Whiteside
  • Kendall
  • Will
  • Winnebago
  • La Salle
  • Jo Daviess
  • Grundy
  • Dekalb
  • Ogle
  • Putnam
  • Kankakee
  • Livingston
  • Lee
  • Boone

Cities with "779" area code

  • Watseka
  • Crystal Lake
  • Onarga
  • Crescent City
  • Mchenry
  • Union
  • Woodstock
  • Wonder Lake
  • Marengo
  • Frankfort
  • Joliet
  • Wilmington
  • Plainfield
  • Princeton
  • Sterling
  • Will
  • Sheffield
  • Spring Valley
  • New Lenox
  • Braidwood
  • Newark
  • Rockford
  • La Salle
  • Galena
  • Verona
  • Sandwich
  • Dekalb
  • Oglesby
  • Tonica
  • Polo
  • Mazon
  • Hennepin
  • Kankakee
  • Ancona
  • Morris
  • Ogle
  • Dixon
  • South Beloit
  • Genoa
  • Manteno
  • Mount Morris
  • Belvidere
  • Pontiac

Exchange codes in the area

Exchange code 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 Dekalb
779 - 223 Onarga
779 - 225 Joliet
779 - 226 Polo
779 - 227 Joliet
779 - 228 Mazon
779 - 229 Hennepin
779 - 230 Joliet
779 - 231 Joliet
779 - 232 Wilmington
779 - 233 Joliet
779 - 234 Plainfield
779 - 235 Crescent City
779 - 236 Kankakee
779 - 237 Ancona
779 - 238 Rockford
779 - 239 Princeton
779 - 240 Kankakee
779 - 241 Morris
779 - 242 Joliet
779 - 243 Frankfort
779 - 244 Mchenry
779 - 245 Sterling
779 - 246 Ogle
779 - 247 Mchenry
779 - 248 Galena
779 - 251 Dixon
779 - 252 Plainfield
779 - 253 South Beloit
779 - 254 Frankfort
779 - 263 Will
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 - 368 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 - 666 Rockford
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