Everything you need to know about area code 309 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 309 serves west-central Illinois including Peoria and Bloomington-Normal. It covers the headquarters of Caterpillar Inc. and State Farm Insurance.
Phone numbers with the 309 area code follow the format (309) XXX-XXXX, where the next three digits represent the local exchange. The 309 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 309 number that you don't recognize, you can search it using the lookup tool above. While the 309 area code legitimately serves millions of residents and businesses in the Peoria 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 Peoria region served by area code 309 is one of the most significant areas in Illinois. As a primary geographic code, 309 has been the main identifier for this region since it was introduced in 1957.
For detailed information about any phone number in the 309 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 309 area code. Scammers often spoof area codes, so a call appearing to come from 309 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 309 serves Peoria, Illinois. Area code 309 serves west-central Illinois including Peoria and Bloomington-Normal. It covers the headquarters of Caterpillar Inc. and State Farm Insurance.
Area code 309 is in the Central timezone. Calls from 309 numbers originate from the Peoria region.
Not necessarily. Area code 309 serves many people in Peoria. However, scammers can spoof any area code. If you receive a suspicious call from a 309 number, search it above before calling back.
Area code 309 was created in 1957. It serves as the primary geographic code for its region.
RELATED AREA CODES
WHO CALLED ME
If you received an unknown call from a 309 number, use our dedicated lookup page to identify the caller and check for scam reports.
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