Tool
Area Code Lookup
Type any 3-digit US area code to instantly see the city, state, and time zone it serves — then jump to the full details page.
Enter a 3-digit area code above.
Looking the other way? Find a city's codes on the city index or paste a full number into the phone number finder.
How the area code lookup works
Type a three-digit area code into the box and the tool matches it against our directory of every active US area code. The moment it finds a match, it shows the primary city, state, and time zone that code serves, plus links to the full code page and the parent state. Everything runs in your browser — nothing is sent anywhere, so it's instant and private.
What the result tells you
- City & state — where the code is primarily based. Large codes cover many surrounding communities, not just the named city.
- Time zone — handy for knowing when it's reasonable to call. A few states span two zones, which we note on each state page.
- Overlay status — the full code page shows whether the area uses overlays and requires 10-digit dialing.
A code not in the directory may be toll-free, unassigned, or reserved. See the complete numeric list or read how area codes work for the full picture.