Antioch, California
Pacific Time Zone (UTC-8) · CA · —
About Area Codes in Antioch, California
Antioch, California is served by area code 925, which was established in 1998 as a geographic split from a larger area code region. The city falls within the Pacific time zone (UTC-8). All calls to and from Antioch use the 925 area code prefix for local and long-distance dialing.
Frequently Asked Questions
What area code is Antioch, California?
Antioch, California uses area code 925.
What time zone is Antioch in?
Antioch is in the Pacific time zone (UTC-8).
Do I need to dial 10 digits when calling Antioch?
Standard 7-digit dialing is used for local calls within Antioch. However, 10-digit dialing is always accepted and required for long-distance calls.
When was area code 925 created?
Area code 925 was established in 1998 as a geographic split from a larger area code region to serve the growing population.
What cities share area code 925 with Antioch?
Other cities sharing area code 925 with Antioch include Brentwood, Concord, Danville, Dublin, Lafayette, among others.
Antioch, CA · Pacific Time Zone