925 area code
Walnut Creek area, Pacific Time.Area code 925 covers Walnut Creek, Concord, Pleasanton and 13 more places in California, on Pacific Time.
Right now in Walnut Creek
Pacific Time (PST, UTC-8; PDT, UTC-7 in summer)
Calling hours: Every day, 8 AM to 9 PM (the federal rule)
Small talk
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Where 925 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 925 has 16. Each one's share is how many 925 numbers start there. Its biggest metro area is San Francisco-Oakland-Fremont, CA.
- Walnut Creek16%
- Concord14%
- Pleasanton12%
- Antioch11%
- Livermore8%
- Bishop Ranch7%
- Dublin-San Ramon7%
- Danville6%
- Pittsburg4%
- East Contra Costa3%
- Martinez3%
- Lafayette2%
Also: Clayton, Orinda, Moraga, Sunol
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call a 925 number?
Sales calls to homes and cell phones have legal hours, set by the federal rule. Hold every 925 number to them, since you can't tell a work line from a personal cell.
What applies to 925Every day, 8 AM to 9 PM
- Federal (TCPA and FTC rule)Every day, 8 AM to 9 PMCalls to residential and mobile numbers. Most calls to businesses are exempt from the FTC's rule.47 CFR 64.1200(c)(1); 16 CFR 310.4(c) (opens in a new tab)
Local time comes from the area code, not from where the person is today. Mobiles keep their number when they move. Calling hours here are a guide, not legal advice. Every state's calling hours, with sources
The 925 area code
925 went into service on March 14, 1998, split off from 510. Local calls take all 10 digits.
- 1998925 starts
Source: NANPA area code database
Other California area codes
All California area codes- Stockton209350
- Los Angeles213323738
- Sacramento279916
- Compton310424
- Oakland341510
- Fresno357559
- Santa Rosa369707
- San Jose408669
- San Francisco415628
- Oceanside442760
- Chico530837
- Long Beach562
- San Diego619858
- Alhambra626
- Palo Alto650
- Anaheim657714
- Bakersfield661
- Van Nuys747818
- Santa Barbara805820
- Salinas831
- Ontario840909
- Irvine949
- Riverside951
Calling a list of 925 numbers?
Paste it into the free phone number validator. It checks every number, finds each one's time zone and sorts the list by who you can call right now.
925 area code FAQ
What area code is 925?
925 is a California area code for Walnut Creek, Concord, Pleasanton, Antioch and 12 more places.
What time zone is the 925 area code in?
Pacific Time (PST, UTC-8; PDT, UTC-7 in summer).
What are the calling hours for 925 numbers?
Every day, 8 AM to 9 PM, local time, under the federal rule.
When did the 925 area code start?
On March 14, 1998. It was split from 510.
Calling 925 numbers? Reach more of them.
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