Fullerton, California
Pacific Time Zone (UTC-8) · CA · —
About Area Codes in Fullerton, California
Fullerton, California is served by 2 area codes: 657, 714. When multiple area codes serve the same geographic area, it typically indicates overlay codes have been added to accommodate growing demand for phone numbers. All local calls within Fullerton require 10-digit dialing. The city is in the Pacific time zone (UTC-8).
Other cities in area code 657
Frequently Asked Questions
What area code is Fullerton, California?
Fullerton, California uses area codes 657 and 714.
What time zone is Fullerton in?
Fullerton is in the Pacific time zone (UTC-8).
Do I need to dial 10 digits when calling Fullerton?
Yes, all local calls in Fullerton require 10-digit dialing because the area is served by multiple overlay area codes.
When was area code 657 created?
Area code 657 was established in 2008 as an overlay code, added to the same geographic region as an existing code to provide more phone numbers.
What cities share area code 657 with Fullerton?
Other cities sharing area code 657 with Fullerton include Anaheim, Buena Park, Costa Mesa, Cypress, Fountain Valley, among others.
Fullerton, CA · Pacific Time Zone