Area Code Box

Area code 779

Where is area code 779?

Rockford, Joliet and Momence, Illinois

Local time: … (Central Time)

StateIllinois
CountryUnited States
Main citiesRockford, Joliet and Momence
Time zoneCentral Time
Overlay area codes815
In service since2007 (created from 815)
Assigned prefixes354
Dialing format(779) XXX-XXXX · +1 779 XXX XXXX from abroad

Look up a 779 number

Enter a 3-digit area code or a full 10-digit number.

Cities and towns in area code 779

Listed by how many phone prefixes (the 3 digits after the area code) are assigned to each place in 779.

Phone companies in area code 779

The carriers that hold the most 779 prefixes. People can move their number to another carrier, so this shows who first issued a number, not who serves it today.

PrefixesCarrier
48Onvoy
43New Cingular Wireless PCS (AT&T)
35Stratus Networks
25T-Mobile USA
24Fractel
23Verizon Wireless
16Bandwidth.com CLEC
13Ton80 Communications

All 354 prefixes in area code 779

Pick the 3 digits after the area code to see that prefix’s city and carrier.

Area codes that overlay 779

Questions

Where is area code 779?
Area code 779 is in Illinois. It serves Rockford, Joliet, Momence, DeKalb and Freeport and 132 other cities and towns.
What time zone is area code 779 in?
Area code 779 uses Central Time.
What area codes overlay 779?
815 serves the same area as 779. New numbers in the area can get any of these codes, which is why local calls need all 10 digits.
Is a call from area code 779 a scam?
The area code alone doesn’t tell you. Most calls from 779 are ordinary local calls, but scammers can fake (“spoof”) any number. If you don’t recognize a 779 number, let it go to voicemail.
When did area code 779 start?
779 went into service in 2007. It was created from area code 815.
Can a 779 number be outside Illinois?
Yes. People keep their numbers when they move and when they switch to mobile or internet phone services, so a 779 caller can be anywhere.

Other area codes in Illinois

Area codeMain cities
217Springfield, Champaign and Decatur
224Northbrook, Arlington Hts and Des Plaines
309Peoria, Bloomington and Rock Island
312Chicgozn01, Wheeling and Oak Brook
331Aurora, Naperville and Downers Grove
447Danville, Springfield and Champaign
464Oak For So, Forest Park and La Grange
618Collinsville, Carbondale and Belleville
630Schaumburg, La Grange and Naperville
708La Grange, Chicago Heights and Oak Forest
730Centralia, Herrin and Belleville
773Harwood Heights, Chicgozn01 and Chicgozn02
847Northbrook, Schaumburg and Arlington Hts
861Peoria, Danvers and Moline
872Chicgozn01, Harwood Heights and Chicgozn04