Area code 858 — California
Area code 858 is in California and serves San Diego suburbs, San Diego. Time zone, overlays, counties and ZIP codes.
| Location | California (San Diego and suburbs) |
|---|---|
| Main places | San Diego suburbs, San Diego |
| State | California |
| Status | In service · since 1999 |
| Time zone | Pacific · |
| Local dialing | 1+10D |
History
- Split of 619
- 2017: merged with 619 as an overlay
Counties (approximate)
ImperialImperial CountySan DiegoSan Diego County
ZIP codes in area code 858
Approximate: area code boundaries follow telephone rate centers, not ZIP codes.
91901 Alpine91902 Bonita91903 Alpine91905 Boulevard91906 Campo91908 Bonita91909 Chula Vista91910 Chula Vista91911 Chula Vista91912 Chula Vista91913 Chula Vista91914 Chula Vista91915 Chula Vista91916 Descanso91917 Dulzura91921 Chula Vista91931 Guatay91932 Imperial Beach91933 Imperial Beach91934 Jacumba91935 Jamul91941 La Mesa91942 La Mesa91943 La Mesa91944 La Mesa91945 Lemon Grove91946 Lemon Grove91948 Mount Laguna91950 National City91951 National City91962 Pine Valley91963 Potrero91976 Spring Valley91977 Spring Valley91978 Spring Valley91979 Spring Valley91980 Tecate91987 Tecate92007 Cardiff By The Sea92008 Carlsbad
Format a 858 number
US numbers are written as (858) 555-0123 or 858-555-0123. From outside the US, dial +1 858 555 0123.
Is a call from 858 a scam?
An area code only tells you where a number was assigned. Caller ID can be faked (“spoofed”), so do not trust a call just because the area code looks local. Never share codes or payment details with unexpected callers.
Sources: NANPA via NumberResearch.org (CC BY 4.0); place names and history from Wikipedia (CC BY-SA 4.0). See data sources.