Area code 925 is the telephone code for California. In 1998, the area code split from area code 510. East bay counties of Alameda and Contra Costa in the northern side of California come under this area code.
History:
This area code was part of area code 415 which was one of the original area codes that were formed in California in 1947. 510 was formed in 1998 when area code 510 was split along with the border of Berkeley hills.
It includes Alameda and Contra Costa in the northern side of California comes under this area code. The area code was assigned as a mandatory ten-digit code in 2021.
Location:
The area code serves the states of California and the major city under this area code is Concord.
Timezone:
The Pacific time zone is the time zone for this area code and the Pacific time zone can also be called the America/Los Angeles time zone.
Countries included in area code:
| COUNTRY | TOTAL POPULATION | % OF 925 | % OF COUNTRY |
| Contra costa | 1,049,025 | 62% | 84% |
| Almeda | 1,510,271 | 38% | 51% |
Cities included in area code
| CITY | TOTAL POPULATION | % OF 925 | % OF CITY |
| Concord | 122,067 | 3% | 100% |
| Antioch | 102,372 | 3% | 100% |
| Livermore | 80,968 | 2% | 100% |
| San Ramon | 72,148 | 2% | 100% |
| Pleasanton | 70,285 | 2% | 100% |
| Walnut creek | 64,173 | 2% | 100% |
| Pittsburg | 63,264 | 2% | 100% |
| Brentwood | 51,481 | 1% | 100% |
| Dublin | 46,036 | 1% | 100% |
| Danville | 42,039 | 2% | 100% |
| Martinez | 34,824 | 1% | 100% |
| Oakley | 35,432 | 1% | 100% |
| Pleasant hills | 33,152 | 1% | 100% |
| Lafayette | 23,893 | 1% | 100% |
| Bay point | 21,349 | 1% | 100% |
| Orinda | 17,643 | 1% | 100% |
| Moraga | 16,016 | 1% | 100% |
| Alamo | 14,570 | 1% | 100% |
| Discovery bay | 13,352 | 1% | 97% |
| Clayton | 10,897 | 0% | 100% |
| Blackhawk | 9,354 | 0% | 100% |
| Contra costa entre | 5,364 | 1% | 100% |
| Saranap | 5,202 | 0% | 100% |
| Vine hill | 3,761 | 0% | 100% |
| Pacheco | 3,685 | 0% | 100% |
| San Miguel | 3,392 | 0% | 100% |
| Reliez valley | 3,101 | 0% | 100% |
| Mountain view | 2,372 | 0% | 100% |
| Camino Tassajara | 2,197 | 0% | 100% |
| Bethel island | 2,137 | 1% | 100% |
| Knightsen | 1,568 | 1% | 100% |
| Castle hill | 1,299 | 0% | 100% |
| Byron | 1,277 | 1% | 100% |
| Diablo | 1,158 | 0% | 100% |
| Acalanes Ridge | 1,137 | 0% | 100% |
| Shell ridge | 959 | 0% | 100% |
| Norris canyon | 957 | 0% | 100% |
| Alhambra valley | 924 | 0% | 100% |
| Sunol | 913 | 2% | 100% |
| North gate | 679 | 0% | 100% |
| Clyde | 678 | 0% | 100% |
Frequently asked questions:
Where is area code 925?
Area code 925 is the telephone code for California. In 1998, the area code split from area code 510. East bay counties of Alameda and Contra Costa in the northern side of California come under this area code.
What is the history of 925?
This area code was part of area code 415 which was one of the original area codes that were formed in California in 1947. 510 was formed in 1998 when area code 510 was split along with the border of Berkeley hills.
It includes Alameda and Contra Costa in the northern side of California comes under this area code. The area code was assigned as a mandatory ten-digit code in 2021.
What is the location of area code 925?
The area code serves the states of California and the major city under this area code is Concord.
What is the timezone of area code 925?
The Pacific time zone is the time zone for this area code and the Pacific time zone can also be called the America/Los Angeles time zone.
Conclusion:
925 is the phone code for California. In 1998, the region code parts from region code 510. East inlet nations of Alameda and Contra Costa in the northern side of California go under this space code. This region code was essential for region code 415 which was one of the first region codes that were framed in California in 1947. 510 was shaped in 1998 when region code 510 was parted alongside the boundary of Berkeley slopes. The region code serves the provinces of California and the significant city under this space code is Concord. The Pacific time region is the time region for this space code and the Pacific time region can likewise be called the America/Los Angeles time region.
For more, you may also read: area code 916