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779 area code

Area code 779 is in Illinois (IL), USA and some of the main locations covered are Joliet, Dekalb, Crystal Lake, .. (jump to city list below).

Area code 779 has been in service since 17 March 2007 and is an overlay code part of overlay complex 815/779 (overlaying area codes cover the same geographic area).

08:16:25 AM is the current time in area code 779 (Central Time).

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Map of area code 779

More Illinois area codes

NPANXX1 Area served2 Date3
779-200Rockford1/18/2011
779-201La Salle3/15/2012
779-202Galena3/6/2012
779-203Rockford10/13/2011
779-204Verona3/19/2014
779-205Joliet5/30/2012
779-206Joliet6/20/2012
779-207Rockford
779-208Rockford11/16/2012
779-209Sandwich8/31/2012
779-210Rockford9/16/2011
779-212De Kalb3/13/2013
779-213Oglesby4/9/2013
779-214Galena12/17/2009
779-215Tonica4/9/2013
779-216Frankfort4/9/2013
779-218Watseka4/9/2013
779-220Crystal Lake5/25/2011
779-221Rockford4/2/2010
779-222Sycamore8/5/2010
779-223Onarga3/23/2016
779-225Joliet9/21/2011
779-226Polo4/24/2013
779-227Joliet7/1/2014
779-228Mazon4/10/2013
779-229Depue5/7/2013
779-230Joliet9/28/2016
779-231Joliet12/21/2015
779-232Wilmington6/7/2007
779-233Joliet7/21/2011
779-234Plainfield8/1/2013
779-235Crescent City2/4/2011
779-236Kankakee7/27/2011
779-237Streator1/8/2018
779-238Rockford4/4/2017
779-239Princeton1/14/2016
779-240Kankakee6/11/2014
779-241Morris6/1/2017
779-242Joliet10/5/2017
779-243Frankfort10/5/2017
779-244Mchenry10/5/2017
779-245Sterling7/14/2008
779-246Rochelle10/23/2017
779-247Woodstock12/1/2017
779-248Galena6/3/2016
779-249Dwight2/22/2018
779-250Sterling2/27/2018
779-251Dixon4/1/2014
779-252Plainfield1/6/2016
779-253South Beloit10/7/2014
779-254Frankfort9/1/2015
779-255De Kalb5/16/2018
779-256Rockford6/5/2018
779-257Wilmington7/11/2018
779-258Herscher8/27/2018
779-259Manteno8/27/2018
779-260Joliet10/8/2018
779-261Fairbury11/30/2018
779-262Oglesby12/5/2018
779-263Plainfield1/2/2018
779-264Kankakee10/7/2019
779-265Mchenry10/8/2019
779-266Lanark12/9/2019
779-267Joliet1/17/2020
779-268St Anne2/6/2020
779-269Rockford2/10/2020
779-270De Kalb2/19/2020
779-271Lanark4/29/2020
779-272Rockford5/1/2020
779-273Danforth5/28/2020
779-274Rockford6/26/2020
779-275Rockford7/28/2020
779-276De Kalb7/28/2020
779-277Flanagan8/12/2020
779-278Grand Ridge3/18/2021
779-279Joliet10/29/2008
779-280Donovan8/25/2020
779-281Toluca8/12/2020
779-282Martinton8/25/2020
779-283Richmond8/25/2020
779-284Sheldon8/25/2020
779-285Sheridan8/25/2020
779-286Spring Grove8/25/2020
779-287Union3/24/2016
779-288Beaverville6/2/2021
779-289South Beloit9/1/2020
779-290Milford9/2/2020
779-291Wonder Lake9/4/2020
779-292Onarga9/4/2020
779-293New Lenox9/4/2020
779-294Harding9/4/2020
779-295Mazon9/4/2020
779-296Long Point9/8/2020
779-297Sterling9/15/2020
779-298Forrest9/15/2020
779-299Wenona9/17/2020
779-300Rockford2/17/2011
779-301Kankakee6/11/2014
779-302Woodstock2/27/2015
779-303Plainfield
779-304Rutland9/17/2020
779-305Reddick9/17/2020
779-306Pontiac9/17/2020
779-307Lostant9/17/2020
779-308Chatsworth9/17/2020
779-310New Milford9/17/2020
779-313Cherry Valley9/17/2020
779-314Rock Cut9/17/2020
779-315Roscoe9/17/2020
779-316Creston9/17/2020
779-317Kirkland9/17/2020
779-318Malta9/17/2020
779-319Maple Park9/17/2020
779-320Monroe Center9/17/2020
779-321Shabbona9/17/2020
779-322Thomas9/17/2020
779-323Rockford9/30/2020
779-324Frankfort8/17/2010
779-325Franklin Grove11/25/2020
779-326Dwight12/10/2020
779-327Warren6/10/2021
779-328Hanover6/10/2021
779-329Mendota6/10/2021
779-330Belvidere6/22/2021
779-332Durand6/10/2021
779-333Frankfort4/11/2013
779-334De Kalb11/4/2020
779-335Rockford6/23/2021
779-336Woodstock2/10/2021
779-337Woodland6/24/2021
779-338Crescent City6/24/2021
779-339Frankfort10/19/2021
779-340Coal City 11/22/2021
779-341Joliet 12/29/2021
779-342Dwight7/14/2021
779-343German Valley11/4/2021
779-344Seward11/4/2021
779-345Byron7/27/2020
779-346Capron9/18/2020
779-347Winslow11/4/2021
779-348Rockford6/13/2007
779-349Spring Valley1/11/2022
779-350Dixon 1/14/2022
779-351Rockford 2/25/2022
779-352Waterman 1/28/2022
779-353Forreston 3/31/2022
779-354Davis 3/31/2022
779-355Harmon 3/31/2022
779-356Crystal Lake7/14/2020
779-357Leaf River 4/12/2022
779-368New Milford8/21/2007
779-377South Beloit9/13/2021
779-379Joliet10/29/2008
779-382Genoa5/7/2007
779-389Garden Prairie4/19/2021
779-399Kinsman1/8/2021
779-400De Kalb2/17/2011
779-410Stockton3/30/2021
779-423Rockford8/8/2007
779-426Manhattan 1/13/2022
779-429Wilmington11/13/2008
779-432Sheffield3/27/2007
779-435Joliet11/13/2006
779-444Wonder Lake8/17/2010
779-456Joliet1/9/2008
779-463Morris 3/23/2022
779-465Braidwood10/10/2019
779-466Emington 1/26/2022
779-475South Beloit3/27/2007
779-479Graymont4/18/2021
779-499Freeport9/13/2021
779-500Rockford3/16/2011
779-513Rockford10/16/2015
779-529Manteno8/17/2010
779-537Rockford3/27/2007
779-545Mount Morris8/8/2007
779-548Marengo8/16/2010
779-552Belvidere6/4/2007
779-577Rockford9/13/2021
779-579Kempton4/18/2021
779-599Paw Paw7/14/2020
779-600Cissna Park8/8/2019
779-601La Salle9/10/2014
779-624Momence 1/13/2022
779-625Woodstock 2/23/2022
779-639Mchenry 1/13/2022
779-666Rockford10/3/2017
779-675Ohio 1/13/2022
779-677Freeport7/27/2020
779-678Rockford1/12/2021
779-679Magnolia4/18/2021
779-696Rockford8/18/2010
779-699South Beloit7/17/2020
779-701Kankakee1/28/2015
779-702Joliet6/11/2014
779-703Joliet10/7/2013
779-704Mchenry10/31/2013
779-706Sandwich2/24/2015
779-707Joliet4/21/2015
779-710Rockford3/18/2021
779-713Woodstock5/22/2015
779-717Spring Valley10/15/2015
779-722Ashton9/18/2020
779-729Lena4/13/2021
779-732La Salle2/10/2021
779-739Forrest 2/14/2022
779-746Cissna Park 1/13/2022
779-749Steward4/13/2021
779-758Joliet10/11/2019
779-759Sycamore4/13/2021
779-766Depue7/14/2020
779-770Rockford11/18/2008
779-771Rockford11/18/2008
779-772Rockford11/18/2008
779-774Rockford2/1/2012
779-775De Kalb9/13/2021
779-777De Kalb10/22/2008
779-778Winnebago5/28/2020
779-783Stockland 1/13/2022
779-788Pecatonica1/28/2021
779-789Rockton4/19/2021
779-797Rockford9/23/2021
779-799Coleta7/27/2020
779-800Crystal Lake4/11/2013
779-801Kankakee9/7/2016
779-803New Lenox8/16/2013
779-804Pontiac2/24/2015
779-809Fulton 3/28/2022
779-832Cedar Point 1/13/2022
779-837Elwood 1/7/2022
779-855Forrest3/31/2021
779-861Dixon5/26/2010
779-867Rockford4/12/2021
779-875Joliet7/12/2007
779-877Verona7/14/2020
779-879Streator4/18/2021
779-888Rockford1/28/2015
779-895Rockford 2/1/2022
779-899Lisbon7/14/2020
779-900Frankfort9/17/2019
779-901Marengo4/30/2015
779-902De Kalb3/19/2021
779-903Braidwood7/29/2013
779-904Freeport3/24/2021
779-910De Kalb3/18/2021
779-915Woodstock11/16/2016
779-922Hooppole7/27/2020
779-927Marengo 1/13/2022
779-931Sandwich10/27/2016
779-933Hinckley7/27/2020
779-939Joliet2/3/2016
779-946Granville7/14/2020
779-970Rockford9/14/2015
779-977Harvard7/14/2020
779-978Sandwich6/4/2015
779-979Piper City4/19/2021
779-990Forrest4/12/2021
779-991Leland8/12/2020
779-994Crystal Lake4/10/2013
779-997Plattville 1/13/2022
779-999Newark9/24/2010
  1. The NPA is the Numbering Plan Area (area code) and NXX is the central office code.
  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. The assignment date. If no date is shown the exchange code was assigned before 2001.

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List of cities in area code 779

City4 County Time5
AldenMcHenry C
AmboyLee C
AnconaLivingston C
Apple RiverJo Daviess C
ArlingtonBureau C
Aroma ParkKankakee C
AshkumIroquois C
AshtonLee C
BaileyvilleOgle C
BeavervilleIroquois C
BelvidereBoone C
BlackstoneLivingston C
BonfieldKankakee C
BourbonnaisKankakee C
BracevilleGrundy C
BradleyKankakee C
BraidwoodWill C
BuckinghamKankakee C
BureauBureau C
ByronOgle C
CaberyFord C
CaledoniaBoone C
CampusLivingston C
CapronBoone C
Cedar PointLa Salle C
CedarvilleStephenson C
ChadwickCarroll C
ChanaOgle C
ChannahonWill C
ChatsworthLivingston C
ChebanseIroquois C
ChenoaMcLean C
CherryBureau C
Cherry ValleyWinnebago C
Cissna ParkIroquois C
ClareDekalb C
ClaytonvilleIroquois C
CliftonIroquois C
Coal CityGrundy C
ComptonLee C
CornellLivingston C
CortlandDekalb C
Crescent CityIroquois C
CrestonOgle C
Crystal LakeMcHenry C
CullomLivingston C
DakotaStephenson C
DalzellBureau C
DanaLa Salle C
DanforthIroquois C
DavisStephenson C
Davis JunctionOgle C
Deer GroveWhiteside C
DekalbDekalb C
DepueBureau C
DixonLee C
DonovanIroquois C
DoverBureau C
DurandWinnebago C
DwightLivingston C
EarlvilleLa Salle C
East DubuqueJo Daviess C
EldenaLee C
EleroyStephenson C
ElizabethJo Daviess C
ElwoodWill C
EmingtonLivingston C
EsmondDekalb C
EssexKankakee C
FairburyLivingston C
FlanaganLivingston C
ForrestLivingston C
ForrestonOgle C
FrankfortWill C
Franklin GroveLee C
FreeportStephenson C
FultonWhiteside C
GalenaJo Daviess C
GaltWhiteside C
Garden PrairieBoone C
GardnerGrundy C
GenoaDekalb C
German ValleyStephenson C
GilmanIroquois C
GoodwineIroquois C
Grand RidgeLa Salle C
Grant ParkKankakee C
GranvillePutnam C
GraymontLivingston C
HanoverJo Daviess C
HarmonLee C
HarvardMcHenry C
HebronMcHenry C
HennepinPutnam C
HerscherKankakee C
HinckleyDekalb C
HolcombOgle C
Homer GlenWill C
HooppoleHenry C
Hopkins ParkKankakee C
IroquoisIroquois C
JolietWill C
KankakeeKankakee C
KasbeerBureau C
KemptonFord C
KentStephenson C
KingstonDekalb C
KinsmanGrundy C
KirklandDekalb C
La MoilleBureau C
La SalleLa Salle C
LaddBureau C
LanarkCarroll C
Leaf RiverOgle C
LeeLee C
Lee CenterLee C
LelandLa Salle C
LenaStephenson C
LeonoreLa Salle C
LindenwoodOgle C
LockportWill C
Long PointLivingston C
LostantLa Salle C
Loves ParkWinnebago C
LyndonWhiteside C
Machesney ParkWinnebago C
MagnoliaPutnam C
MaldenBureau C
MaltaDekalb C
ManhattanWill C
ManliusBureau C
MantenoKankakee C
Maple ParkKane C
MarengoMcHenry C
MarkPutnam C
MarseillesLa Salle C
MartintonIroquois C
MazonGrundy C
Mc ConnellStephenson C
Mc NabbPutnam C
McHenryMcHenry C
MendotaLa Salle C
MilfordIroquois C
MilledgevilleCarroll C
MillingtonKendall C
MinookaGrundy C
MomenceKankakee C
Monroe CenterOgle C
MorrisGrundy C
MorrisonWhiteside C
Mount CarrollCarroll C
Mount MorrisOgle C
NachusaLee C
New BedfordBureau C
New LenoxWill C
NewarkKendall C
NoraJo Daviess C
OdellLivingston C
OglesbyLa Salle C
OhioBureau C
OnargaIroquois C
OrangevilleStephenson C
OregonOgle C
OttawaLa Salle C
PapineauIroquois C
Paw PawLee C
Pearl CityStephenson C
PecatonicaWinnebago C
PeruLa Salle C
Piper CityFord C
PlainfieldWill C
PoloOgle C
PontiacLivingston C
Poplar GroveBoone C
PrincetonBureau C
ProphetstownWhiteside C
PutnamPutnam C
RansomLa Salle C
ReddickKankakee C
RichmondMcHenry C
RidottStephenson C
RingwoodMcHenry C
RochelleOgle C
Rock CityStephenson C
Rock FallsWhiteside C
RockfordWinnebago C
RocktonWinnebago C
RomeovilleWill C
RoscoeWinnebago C
RutlandLa Salle C
SandwichDekalb C
SauneminLivingston C
SavannaCarroll C
Scales MoundJo Daviess C
SeatonvilleBureau C
SenecaLa Salle C
SerenaLa Salle C
SewardWinnebago C
ShabbonaDekalb C
ShannonCarroll C
SheffieldBureau C
SheldonIroquois C
SheridanLa Salle C
ShirlandWinnebago C
SomonaukDekalb C
South BeloitWinnebago C
South WilmingtonGrundy C
Spring GroveMcHenry C
Spring ValleyBureau C
St AnneKankakee C
StandardPutnam C
SterlingWhiteside C
StewardLee C
Stillman ValleyOgle C
StocklandIroquois C
StocktonJo Daviess C
StrawnLivingston C
StreatorLa Salle C
SubletteLee C
SycamoreDekalb C
TampicoWhiteside C
ThomsonCarroll C
TiskilwaBureau C
TolucaMarshall C
TonicaLa Salle C
TriumphLa Salle C
Troy GroveLa Salle C
UnionMcHenry C
Union HillKankakee C
UticaLa Salle C
Van OrinBureau C
VeronaGrundy C
WalnutBureau C
WarrenJo Daviess C
WatermanDekalb C
WatsekaIroquois C
WedronLa Salle C
WellingtonIroquois C
WenonaMarshall C
West BrooklynLee C
WilmingtonWill C
WinnebagoWinnebago C
WinslowStephenson C
Wonder LakeMcHenry C
WoodlandIroquois C
WoodstockMcHenry C
WoosungOgle C
WyanetBureau C
  1. Listed in the table above are most, often not all places served by area code 779. When two or more places with the same name are located in the same state we list the largest one only. Cities with population over 50,000 are displayed in bold text.
  2. C stands for Central Time (currently 08:16:25 AM).

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