779 Area Code – Where Is It and Who Uses It?

Matthew Daniel

October 12, 2025

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What Is the 779 Area Code?

The 779 area code is an overlay code that serves northern Illinois, including cities like Rockford, DeKalb, and Freeport. It shares the same region as the 815 area code, which means both codes serve the same area.

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Where Is Area Code 779 Located?

RegionDetails
CountryUnited States
StateIllinois
Main CitiesRockford, Joliet, DeKalb, Freeport, Ottawa
Time ZoneCentral Time (CST/CDT)
Overlay Code815 (original), 779 (overlay)
IntroducedMarch 17, 2007

Is 779 a Mobile or Landline Code?

The 779 area code can be used for both landlines and mobile numbers. It depends on the service provider and the type of phone line.

Is a Call from 779 Area Code Spam?

Not always. Many legit calls come from this code, especially if you live in Illinois. But like any area code, scammers can spoof 779 numbers too.

If you get a call from 779 and don’t recognize the number:

  • Don’t answer it unless you’re expecting a call.
  • If it sounds suspicious, don’t share personal information.
  • Search the number online to see if others have reported it.

FAQ

Q1: What city is the 779 area code?
A: It covers multiple cities in northern Illinois, including Rockford, Joliet, and DeKalb.

Q2: Is 779 area code a scam?
A: Not by default. It’s a real area code. But scammers can spoof it, so stay alert.

Q3: When was the 779 code added?
A: It was added in 2007 as an overlay to the 815 area code.

Q4: Can I get a 779 number today?
A: Yes. New phone numbers in that region may come with a 779 prefix.

Q5: Is the 779 area code in Chicago?
A: No, Chicago has different area codes (like 312, 773, 872). 779 covers parts of northern Illinois outside Chicago.

Final Thoughts

The 779 area code is legit and covers much of northern Illinois. Whether you’re getting a call from it or looking to get a number in that region, now you know exactly where it comes from and what it means.

Matthew Daniel is the editor and storyteller at Adam Magazine. He writes about Legal Age, Celebrity Age, and Animal Age with a clear focus on giving readers helpful and reliable information. With years of experience in writing and research, Matthew brings stories to life in a way that’s both simple to follow and easy to trust. Message me on Telegram.

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