What area code is 773?
Here's everything about it.
Instant lookup for the 773 area code — location, time zone, cities served, and who's been calling from it. No sign-up, no app.
773 at a glance
Summary
Cities & regions served by 773
Chicago1 community on record for 773.
Where 773 sits on the map
Overlay: 872Coverage area
About the 773 region
773 covers Chicago in Illinois. The code has been in service since 1996.
As the Chicago region grew, 773 ran low on available numbers, so 872 was added as an overlay code over the same geographic area. Both codes are local to each other and 10-digit dialing applies throughout.
Split of 312; 2009: overlaid by 872.
Who called me from 773?
Community reports- Caller ID is trivially spoofed: an incoming call that displays 773 does not prove the caller is really in the 773 region or even in the United States.
- Avoid calling back unknown one-ring numbers — some premium-rate scams rely on curiosity callbacks.
- Never share verification codes, payment details, or remote access during an unsolicited call, even if the caller claims to be your bank or a government agency.
- When a 773 call pressures you to act immediately, hang up and contact the organization directly through its official number.
Be the first to add a community report for a 773 number below.
Frequently asked questions
FAQWhat area code is 773?+–
773 is a telephone area code serving Chicago in Illinois, United States, in service since 1996.
Where is area code 773 located?+–
It covers Chicago in Illinois.
What time zone is 773?+–
773 observes Central (CT), which is UTC−6 / −5 DST and follows daylight saving time.
When did area code 773 start?+–
773 entered service in 1996. Its history: split of 312; 2009: overlaid by 872.
Why do calls to 773 require 10-digit dialing?+–
773 shares its territory with overlay code 872. Because both codes serve the same geographic area, the phone network needs all 10 digits to route a call, and calls between the codes are still local.
Is 773 a scam area code?+–
Scam and robocall traffic can use any North American code, 773 included — caller ID is easy to spoof, so the code alone does not tell you who is really calling. Check the community reports on this page before calling back an unknown 773 number, and report anything suspicious.
Can I get a 773 phone number?+–
Yes — most mobile carriers and VoIP providers let you request a 773 number regardless of where you physically live.