Area code 858 is the California area code serving the San Diego country.
History:
In 1982 the area code 619 was formed after its split from area code 714. It was eliminated in 2019 that area code 619 may exhaust. To deal with this matter California Public Utilities Commission approved an overlay. So a ten-digit code was implemented as an 858 code. This area code is expected not to exhaust for 30 years. So San Diego will not run out of numbers till 2043.
Location:
The area code is located in California state and the major city under this area code in San Diego.
Timezone:
Pacific time zone is the time zone for this area code and the other name for Pacific time zone is Los Angeles/ America time zone.
Countries included in area code:
| COUNTRY | TOTAL POPULATION | % OF 858 | % OF COUNTRY |
| San Diego | 3,095,313 | 100% | 37% |
Cities included in area code:
| CITY | TOTAL POPULATION | % OF 858 | % OF CITY |
| San Diego | 1,307,402 | 21% | 96% |
| Chula vista | 243,916 | 3% | 100% |
| El Cajon | 99,478 | 1% | 100% |
| national city | 58,582 | 1% | 100% |
| La mesa | 57,065 | 1% | 100% |
| Santee | 53,413 | 1% | 100% |
| Poway | 47,811 | 2% | 91% |
| La Presa | 34,169 | 0% | 100% |
| Spring valley | 28,205 | 0% | 100% |
| Imperial beach | 26,324 | 0% | 100% |
| Lemon grove | 25,320 | 0% | 100% |
| Rancho San Diego | 21,208 | 1% | 100% |
| Lakeside | 20,648 | 0% | 100% |
| Winter gardens | 20,631 | 0% | 100% |
| Coronado | 18,912 | 2% | 100% |
| Casa de Oro mount helix | 18,762 | 0% | 100% |
| Bostonia | 15,379 | 0% | 100% |
| Alpine | 14,236 | 2% | 100% |
| Solana beach | 12,867 | 0% | 100% |
| Bonita | 12,538 | 0% | 100% |
| Jamul | 6,163 | 1% | 100% |
| Eucalyptus hills | 5,313 | 0% | 100% |
| Del mar | 4,161 | 0% | 100% |
| Harbison canyon | 3,841 | 1% | 100% |
| Fairbanks ranch | 3,148 | 0% | 98% |
| Granite hills | 3,035 | 0% | 100% |
| Campo | 2,684 | 1% | 100% |
| Crest | 2,593 | 0% | 100% |
| Pine valley | 1,519 | 0% | 100% |
| Descanso | 1,423 | 1% | 100% |
| Potrero | 656 | 0% | 100% |
| Jacumba | 561 | 0% | 100% |
| Rancho Santa Fe | 3,117 | 0% | 18% |
| Boulevard | 315 | 0% | 100% |
Frequently asked questions:
What area does 858 belong to?
Area code 858 is the California area code serving the San Diego country.
Where does area code 858 come from?
In 1982 the area code 619 was formed after its split from area code 714. It was eliminated in 2019 that area code 619 may exhaust. To deal with this matter California Public Utilities Commission approved an overlay. So a ten-digit code was implemented as an 858 code.
What is the location of the 858 area code?
The area code is located in California state and the major city under this area code is San Diego.
What is the time zone for the 858 area code?
Pacific time zone is the time zone for this area code and the other name for Pacific time zone is Los Angeles/ America time zone.
Conclusion:
Area code 858 is the California area code serving the San Diego country. In 1982 the area code 619 was formed after its split from area code 714. It was eliminated in 2019 that area code 619 may exhaust. To deal with this matter California Public Utilities Commission approved an overlay. So a ten-digit code was implemented as an 858 codeThe area code is located in California state and the major city under this area code in San Diego. Pacific time zone is the time zone for this area code and the other name for the Pacific time zone is Los Angeles/ America time zone.
For more, you may also read area code 805.