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AREA CODE · ILLINOIS

Area code 779

Area code 779 covers Rockford, Illinois. Map, time zone, overlays, carriers, the full list of prefixes and how to dial it.

State: Illinois Major City: Rockford Central Time (CT) Overlay: 779/815
01 / WHERE IT IS

Where is area code 779?

Area code 779 is assigned to Rockford and the surrounding region in Illinois. Calls to numbers that start with 779 are routed to this area.

Area code 779 shares its territory with 815. Because it is an overlay, local calls require dialing all 10 digits.

Counties covered

Winnebago CountyWill CountyKankakee CountyMcHenry CountyDeKalb CountyLaSalle CountyLivingston CountyIroquois CountyStephenson CountyOgle CountyLee CountyGrundy CountyBureau CountyWhiteside CountyJo Daviess CountyBoone County

Line types

  • Mobile 32.85%
  • Landline 67.15%
02 / MAP

Area code 779 on the map

The shaded area joins the code’s numbering centers; the marker shows its main city.

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© OpenStreetMap contributors

03 / LOCAL TIME

Current time in Rockford

This area code is in the Central Time (CT) time zone.

Local timeRockford, IL--:--:--

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America/ChicagoLive
04 / HOW TO DIAL

How to call Rockford

WITHIN THE US779 XXX XXXX

Always 10 digits — landline, mobile or VoIP. Local, long distance or a different state: the format is always the same. You do not need to dial the 1 first.

FROM ABROAD+1 779 XXX XXXX

Exit codes: 00 Europe/Mexico · 011 Canada · 010 Japan · + universal

WHATSAPP / IMESSAGE+1 779 XXX XXXX

Always save the number in international format so messaging apps recognize it correctly:

Call typeTraditional landlineMobile / VoIP
Local (same area code)10 digits10 digits
US long distance1 + 10 digits10 digits
Emergency911911
🌐Universal+1 779 555 0123
🇪🇸🇲🇽Spain / Mexico00 1 779 555 0123
🇦🇺Australia0011 1 779 555 0123
🇯🇵Japan010 1 779 555 0123
HAVE THE FULL NUMBER?

Learn more about that number.

Check the line type and the carrier the number block was originally assigned to.

10 digits to see the carrier and line type of the number

05 / CARRIERS

Carriers in area code 779

Share of the number blocks by carrier and line type.

Landline

Sinch
21%
Stratus Networks
15%
Fractel
10%
Bandwidth
7%
AT&T
6%
Others
40%

Mobile

AT&T Mobility
37%
T-MOBILE USA
22%
Verizon Wireless
19%
UScellular
9%
Sinch
8%
Others
4%

Carrier shown is the original assignment of each number block and may differ today because of number portability.

06 / PREFIXES

Complete list of prefixes for area code 779

344 number blocks (NXX) assigned in this area code.

PrefixTypeCityCarrier
(779) 200 Mobile Rockford Verizon WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
(779) 201 Mobile La Salle Verizon WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
(779) 202 Landline Galena AT&TTELEPORT COMMUNICATIONS AMERICA, LLC - IL
(779) 203 Mobile Rockford T-MOBILE USAT-MOBILE USA, INC.
(779) 204 Landline Verona SinchONVOY, LLC
(779) 205 Mobile Joliet AT&T MobilityNEW CINGULAR WIRELESS PCS, LLC - IL
(779) 206 Mobile Joliet Verizon WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
(779) 207 Mobile Rockford Verizon WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
(779) 208 Mobile Rockford Verizon WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
(779) 209 Landline Sandwich InfobipPEERLESS NETWORK OF ILLINOIS, LLC - IL

Showing 10 of 344 prefixes

07 / FAQ

Frequently asked questions about area code 779

Where is area code 779 used?
Area code 779 serves Rockford and the surrounding area in Illinois, including Winnebago County, Will County, Kankakee County, McHenry County, DeKalb County.
What city is area code 779 from?
The main city of area code 779 is Rockford, IL.
What time zone is area code 779 in?
Area code 779 is in the Central Time (CT) time zone (America/Chicago).
Is 779 an overlay area code?
Yes. It shares its territory with 815. In an overlay, every call requires dialing all 10 digits.
How do I call a number with area code 779 from the United States?
Dial the 10 digits: 779 + 7-digit number. For some long-distance calls from a landline you may need to add a 1 first.
How do I call a 779 number from another country?
Dial your country's exit code (or +), then 1, then 779 and the seven-digit number. From a mobile you can use +1 779 XXX XXXX.
Which carriers use area code 779?
Most landline blocks belong to Sinch and most mobile blocks to AT&T Mobility. The carrier shown is the original assignment and may differ today because of number portability.
Is area code 779 for landlines, mobiles or both?
Both. About 67.15% of the number blocks are landline, 32.85% mobile.
How do I save a 779 number in WhatsApp or my phone?
Save it in international format: +1 779 XXX XXXX. That way WhatsApp, iMessage and Telegram recognize it from any country.
Is it safe to answer calls from area code 779?
The area code only shows the region a number was assigned to; it does not tell you who is calling. Scammers can fake any area code, so do not share personal or banking information with unknown callers, and let unknown numbers go to voicemail.
KEEP EXPLORING

Nearby area codes

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Other area codes in Illinois

217 · Springfield224 · Arlington Heights309 · Peoria312 · Chicago331 · Aurora447 · Danville464 · Tinley Park618 · Collinsville630 · La Grange708 · La Grange730 · Centralia773 · Chicago815 · Rockford847 · Northbrook872 · Chicago

View all Illinois area codes →