Area code 309 — Illinois
Area code 309 is in Illinois. Time zone, overlays, counties and ZIP codes.
| Location | 309, 806, 808, 907 |
|---|---|
| State | Illinois |
| Status | In service · since 1957 |
| Local dialing | 10 digits |
Format a 309 number
US numbers are written as (309) 555-0123 or 309-555-0123. From outside the US, dial +1 309 555 0123.
Is a call from 309 a scam?
An area code only tells you where a number was assigned. Caller ID can be faked (“spoofed”), so do not trust a call just because the area code looks local. Never share codes or payment details with unexpected callers.
Sources: NANPA via NumberResearch.org (CC BY 4.0); place names and history from Wikipedia (CC BY-SA 4.0). See data sources.