Area code 773 — Illinois
Area code 773 is in Illinois and serves City of Chicago, Chicago. Time zone, overlays, counties and ZIP codes.
| Location | Illinois (City of Chicago, excluding downtown) |
|---|---|
| Main places | City of Chicago, Chicago |
| State | Illinois |
| Status | In service · since 1996 |
| Overlay codes | 872 Overlays share the same area. Local calls usually need 10-digit dialing. |
| Local dialing | 1+10D |
History
- Split of 312
- 2009: overlaid by 872
Format a 773 number
US numbers are written as (773) 555-0123 or 773-555-0123. From outside the US, dial +1 773 555 0123.
Is a call from 773 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.