Area Code 925

Area Code 925
Post Office City: San Diego, CA
County: San Diego County County
Timezone: America/Los_Angeles
Coordinates: -117.09, 32.72
Area Code: 925

What is the Area Code?

In the United States, the "Area Code" is a numerical prefix used in phone numbers to identify a specific geographic region within the country. These area codes are part of the telephone numbering system and are essential for the proper routing of calls.

The area code typically consists of three digits and precedes the local phone number. For example, in the phone number (212) 555-1234, "212" is the area code that corresponds to a part of New York City.

Functions of the Area Code:

Geographic Identification: Allows the determination of the region or city from which a call originates. Call Routing: Helps telephone service providers direct calls efficiently through their network. Number Distribution: Facilitates the assignment and organization of phone numbers to avoid conflicts and duplications. Billing: Sometimes, call costs can vary depending on the area code, especially for long-distance calls. In summary, area codes are fundamental to the functioning of the telephone system in the United States, ensuring that calls are connected correctly and managed in an orderly manner.

925

Cities and counties within 925 Area Code

Here are the cities and towns for Area Code 925 that the US Post Office accepts. The city listed as the main city is usually where the main post office is located. When sending a letter or package, always include your preferred city to ensure your delivery is as successful as possible

Primary CityAceptable CitiesStateCountyZIPArea codesTimezone
San Diego--California(CA)San Diego County92102619, 925, 858America/Los_Angeles
South San FranciscoS San FranCalifornia(CA)San Mateo County94080650, 415, 925America/Los_Angeles
San Francisco--California(CA)San Francisco County94104415, 925, 510, 831, 650, 000America/Los_Angeles
San Francisco--California(CA)San Francisco County94108415, 925, 650, 510America/Los_Angeles
San Francisco--California(CA)San Francisco County94133415, 925, 408America/Los_Angeles
DanvilleBlackhawkCalifornia(CA)Contra Costa County94506925, 510America/Los_Angeles
Alamo--California(CA)Contra Costa County94507510, 925America/Los_Angeles
Antioch--California(CA)Contra Costa County94509510, 925America/Los_Angeles
Benicia--California(CA)Solano County94510707, 858, 415, 510, 925America/Los_Angeles
Bethel Island--California(CA)Contra Costa County94511925America/Los_Angeles
Brentwood--California(CA)Contra Costa County94513925, 916America/Los_Angeles
ByronDiscovery BayCalifornia(CA)Contra Costa County94514925America/Los_Angeles
Clayton--California(CA)Contra Costa County94517925America/Los_Angeles
Concord--California(CA)Contra Costa County94518925, 510America/Los_Angeles
Concord--California(CA)Contra Costa County94519510, 925America/Los_Angeles
Concord--California(CA)Contra Costa County94520510, 925, 707, 415, 209America/Los_Angeles
Concord--California(CA)Contra Costa County94521925, 510America/Los_Angeles
Concord--California(CA)Contra Costa County94522925America/Los_Angeles
Pleasant HillConcordCalifornia(CA)Contra Costa County94523925, 707America/Los_Angeles
Concord--California(CA)Contra Costa County94524925America/Los_Angeles
Danville--California(CA)Contra Costa County94526925, 510America/Los_Angeles
Concord--California(CA)Contra Costa County94527925America/Los_Angeles
Diablo--California(CA)Contra Costa County94528925America/Los_Angeles
Concord--California(CA)Contra Costa County94529925America/Los_Angeles
Antioch--California(CA)Contra Costa County94531510, 925, 408America/Los_Angeles
Fremont--California(CA)Alameda County94536510, 408, 925America/Los_Angeles
Fremont--California(CA)Alameda County94538510, 707, 408, 925America/Los_Angeles
Fremont--California(CA)Alameda County94539510, 650, 415, 925, 209, 000America/Los_Angeles
Hayward--California(CA)Alameda County94541510, 925America/Los_Angeles
Hayward--California(CA)Alameda County94544510, 209, 415, 925America/Los_Angeles
Castro ValleyHaywardCalifornia(CA)Alameda County94546510, 925America/Los_Angeles
Lafayette--California(CA)Contra Costa County94549925, 510, 707America/Los_Angeles
Livermore--California(CA)Alameda County94550925, 408, 510, 415, 619America/Los_Angeles
Livermore--California(CA)Alameda County94551925America/Los_Angeles
MartinezBriones, PachecoCalifornia(CA)Contra Costa County94553510, 925America/Los_Angeles
Moraga--California(CA)Contra Costa County94556707, 925, 949America/Los_Angeles
Oakley--California(CA)Contra Costa County94561925America/Los_Angeles
Orinda--California(CA)Contra Costa County94563925, 510America/Los_Angeles
PittsburgBay PointCalifornia(CA)Contra Costa County94565925, 510, 415America/Los_Angeles
Pleasanton--California(CA)Alameda County94566925America/Los_Angeles
DublinPleasantonCalifornia(CA)Alameda County94568925, 510, 831America/Los_Angeles
Moraga--California(CA)Contra Costa County94570925America/Los_Angeles
Moraga--California(CA)Contra Costa County94575925America/Los_Angeles
San Leandro--California(CA)Alameda County94577510, 925, 858, 949America/Los_Angeles
San Ramon--California(CA)Contra Costa County94582925America/Los_Angeles
San Ramon--California(CA)Contra Costa County94583925, 510, 415, 707America/Los_Angeles
Suisun CityBirds LndgCalifornia(CA)Solano County94585707, 925America/Los_Angeles
Sunol--California(CA)Alameda County94586925America/Los_Angeles
Union City--California(CA)Alameda County94587510, 310, 925, 408, 916America/Los_Angeles
Pleasanton--California(CA)Alameda County94588925, 510America/Los_Angeles
Walnut Creek--California(CA)Contra Costa County94595510, 925, 415, 707America/Los_Angeles
Walnut Creek--California(CA)Contra Costa County94596510, 925, 415, 619America/Los_Angeles
Walnut Creek--California(CA)Contra Costa County94597925America/Los_Angeles
Walnut Creek--California(CA)Contra Costa County94598925, 510, 707America/Los_Angeles
Oakland--California(CA)Alameda County94603510, 925America/Los_Angeles
Oakland--California(CA)Alameda County94607510, 559, 415, 925, 650America/Los_Angeles
Oakland--California(CA)Alameda County94612510, 415, 925America/Los_Angeles
Oakland--California(CA)Alameda County94615415, 510, 925America/Los_Angeles
Oakland--California(CA)Alameda County94621510, 925America/Los_Angeles
BerkeleyAlbanyCalifornia(CA)Alameda County94710510, 650, 408, 925America/Los_Angeles
Corte Madera--California(CA)Marin County94925415, 510, 925America/Los_Angeles
Larkspur--California(CA)Marin County94939415, 925America/Los_Angeles
Santa Clara--California(CA)Santa Clara County95051408, 925America/Los_Angeles
Saratoga--California(CA)Santa Clara County95070408, 925, 415America/Los_Angeles
TracyBantaCalifornia(CA)San Joaquin County95304925, 209, 805America/Los_Angeles
Vacaville--California(CA)Solano County95696707, 925America/Los_Angeles