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What area code is 925? The area code 925 is in California and it serves Concord, Antioch, Livermore, San Ramin, Pleasanton, Walnut Creek, Pittsburg, Brentwood, Dublin, and some other surrounding cities. The area code 925 was created from area code 510 on May 19, 1997, and was first put to use on March 14, 1998.

 

The top counties that are being served by the 925 area code are Alameda County and San Contra Costa County.

 

The major cities under each of these counties that are being served by the 925 area code are listed below:

 

Alameda County

The cities within Alameda County that are served by the 925 area code include Dublin, Livermore, Pleasanton, and Sunol.

Contra Costa County

The cities within Contra Costa County that are served by the area code include Alamo, Antioch, Bethel Island, Brentwood, Byron, Clayton, Concord, Danville, Diablo, Discovery Bay, Knightsen, Lafayette, Martinez, Moraga, Oakley, Orinda, Pittsburg, Pleasant Hill, San Ramon, and Walnut Creek.

 

925 Area Code Time Zone

What time zone is 925 Area Code? The time zone in the 925 area code is the Pacific time zone which is abbreviated as PST. That is America/Los Angeles time zone. The pacific standard time is UTC/GMT -8:00 hours while the pacific daylight saving time is +1:00 hour.

 

Significance of 925 Area Code

I don’t know if you notice that there is a three-digit number that precedes a telephone number any time you receive a call from your cell phone. Any time you see the three-digit code 925, it suggests that the call comes from any of the cities or counties listed above. However, there may be an exemption to this. With the use of mobile phone or roaming phone feature, the caller may not necessarily be at any of these cities or counties at the time of calling.

Nevertheless, knowing the counties and cities that this area code covers can guide you when to call a particular person. This is because the person you want to call may be in a time zone that is different from your own.

Telephone Carriers in 925 Area Code

If you want to get a wireless telephone within this area code, the popular wireless telephone carriers that you can approach include Pacific Bell, Sprint, Verizon Wireless, Cingular Wireless, T-mobile USA, American Messaging Services, American Messaging (am), USA Mobility Wireless, 33 Wireless, Metro PCS, The Telephone Connection Local Services, and MPower Comms Corp.

For landline, popular carriers are Pacific Bell, U.S. Telepacific Corp, Level 3 Communications, Teleport Group – San Francisco, Xo Comms, Mcimetro Access Transmission Services, Pac – West Telecomm, Broadwing Comms, Telekenex, Comcast Phone, Global Crossing Local Services, Ymax Comms Corp, Mci Worldcom Comm, Tw Telecom of California, Peerless Network, Bandwidth.com, Mpower Comms Corp, Allegiance Telecom, AT&T Local, and North County Comms Corp.

 

Zip Codes in 925 Area Code

City	County	State	Area Code	Zip Code
Alamo	Contra Costa	California	925	94507
Antioch	Contra Costa	California	925	94509
Antioch	Contra Costa	California	925	94531
Bethel Island	Contra Costa	California	925	94511
Brentwood	Contra Costa	California	925	94513
Byron	Contra Costa	California	925	94514
Canyon	Contra Costa	California	925	94516
Clayton	Contra Costa	California	925	94517
Concord	Contra Costa	California	925	94518
Concord	Contra Costa	California	925	94519
Concord	Contra Costa	California	925	94521
Concord	Contra Costa	California	925	94520
Concord	Contra Costa	California	925	94524
Concord	Contra Costa	California	925	94529
Concord	Contra Costa	California	925	94522
Concord	Contra Costa	California	925	94527
Danville	Contra Costa	California	925	94506
Danville	Contra Costa	California	925	94526
Diablo	Contra Costa	California	925	94528
Discovery Bay	Contra Costa	California	925	94505
Knightsen	Contra Costa	California	925	94548
Lafayette	Contra Costa	California	925	94549
Martinez	Contra Costa	California	925	94553
Moraga	Contra Costa	California	925	94556
Moraga	Contra Costa	California	925	94570
Moraga	Contra Costa	California	925	94575
Oakley	Contra Costa	California	925	94561

 

Orinda	Contra Costa	California	925	94563
Pittsburg	Contra Costa	California	925	94565
Pleasant Hill	Contra Costa	California	925	94523
San Ramon	Contra Costa	California	925	94583
San Ramon	Contra Costa	California	925	94582
Walnut Creek	Contra Costa	California	925	94595
Walnut Creek	Contra Costa	California	925	94598
Walnut Creek	Contra Costa	California	925	94597
Walnut Creek	Contra Costa	California	925	94596

Area Code

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