California · Pacific Time
925 Area Code
The 925 area code is a telephone area code in California, covering Concord and the surrounding area. It lies in the Pacific Time zone.
Last updated June 5, 2026
Where is the 925 area code?
925 serves Concord and nearby communities in California. In the wider directory it sits in the West region.
Dialing 925
Concord is currently served by the single area code 925. Ten-digit dialing (area code + seven-digit number) always works and is increasingly the norm nationwide; some local calls may still connect with seven digits. If a future overlay is added, 10-digit dialing would become mandatory.
History of the 925 area code
925 is a geographic area code serving Concord and the surrounding part of California. It was added after the original 1947 plan as telephone demand grew. For how codes are created, split, and overlaid, see how area codes work.
Is 925 a scam or spam risk?
925 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 925 number on your screen is no guarantee the caller is local or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Other California area codes
Explore more
See every code in California, compare codes across the West region, or view all Pacific Time codes. You can also browse the 9XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
925 area code FAQ
Where is the 925 area code?
The 925 area code is in California, serving Concord and the surrounding area in the West region.
What time zone is 925 in?
925 is in the Pacific Time zone.
Do I have to dial 10 digits for 925?
Ten-digit dialing always works, and many areas now require it; some local calls in this area may still connect with seven digits.
Is 925 a toll-free or premium code?
No. 925 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.