Antioch, CA Area Codes
Antioch is served by area code 925. It is in California, Contra Costa County. About 116,477 people live in its 2 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 925 |
| State / province | California |
| County | Contra Costa County |
| Population | 116,477 |
| ZIP codes | 2 |
| Time zone | Pacific |
| Coordinates | 37.9743, -121.7952 |
What area code is Antioch in?
| Area code | Main state | Population covered | Overlap |
|---|---|---|---|
| 925 | California | 1,128,993 | — |
ZIP codes in the code footprint
Nearby towns and their area codes
Oakley 925Brentwood 925Pittsburg 925Clayton 925Concord 925Rio Vista 707Discovery Bay 925Danville 925
How to dial
Dial 925 + 7 digits for a number in Antioch, or +1 925 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.