Everything you need to know about area code 773 in Illinois
QUICK FACTS
Illinois
Central Time Zone
Split from existing code
Estimated residents served
Illinois
Primary code for this region
ABOUT THIS AREA CODE
Area code 773 serves the neighborhoods of Chicago outside of downtown, covering the majority of the city's residential areas. It is the most commonly used area code within the Chicago city limits.
Phone numbers with the 773 area code follow the format (773) XXX-XXXX, where the next three digits represent the local exchange. The 773 area code is part of the North American Numbering Plan (NANP) and is regulated by the Federal Communications Commission (FCC).
If you receive a call from a 773 number that you don't recognize, you can search it using the lookup tool above. While the 773 area code legitimately serves millions of residents and businesses in the Chicago area, scammers sometimes spoof local area codes to make their calls appear more trustworthy. Always verify unfamiliar numbers before returning calls or sharing personal information.
The Chicago region served by area code 773 is one of the most densely populated areas in Illinois. As a primary geographic code, 773 has been the main identifier for this region since it was introduced in 1996.
For detailed information about any phone number in the 773 area code, including owner identification, carrier data, and spam reports, use our search tool above or visit one of our trusted lookup providers.
CITIES & COMMUNITIES
SPAM & SCAM ALERTS
These are frequently reported scam patterns from phone numbers using the 773 area code. Scammers often spoof area codes, so a call appearing to come from 773 may originate elsewhere.
Callers claim your Social Security number has been suspended due to suspicious activity and demand personal information to reactivate it.
Robocalls claim your car warranty is expiring and pressure you into purchasing expensive and unnecessary extended coverage.
Callers impersonate your electric or gas company, threatening immediate service disconnection unless payment is made by phone.
Stay Safe: Never share personal information with incoming callers. If suspicious, hang up and search the number above.
FREQUENTLY ASKED QUESTIONS
Area code 773 serves Chicago, Illinois. Area code 773 serves the neighborhoods of Chicago outside of downtown, covering the majority of the city's residential areas. It is the most commonly used area code within the Chicago city limits.
Area code 773 is in the Central timezone. Calls from 773 numbers originate from the Chicago region.
Not necessarily. Area code 773 serves many people in Chicago. However, scammers can spoof any area code. If you receive a suspicious call from a 773 number, search it above before calling back.
Area code 773 was created in 1996. It serves as the primary geographic code for its region.
RELATED AREA CODES
WHO CALLED ME
If you received an unknown call from a 773 number, use our dedicated lookup page to identify the caller and check for scam reports.
Who Called Me From 773? →