Area code 820 — California
Area code 820 is in California and serves Ventura, San Luis Obispo, Santa Barbara Counties. Time zone, overlays, counties and ZIP codes.
| Location | California (Ventura, San Luis Obispo, and Santa Barbara Counties) |
|---|---|
| Main places | Ventura, San Luis Obispo, Santa Barbara Counties |
| State | California |
| Status | In service · since 2018 |
| Time zone | Pacific · |
| Overlay codes | 805 Overlays share the same area. Local calls usually need 10-digit dialing. |
| Local dialing | 1+10D |
History
- Overlaid on 805
Counties (approximate)
Kern CountyMonterey CountySan Luis ObispoSan Luis Obispo CountySanta BarbaraSanta Barbara County
ZIP codes in area code 820
Approximate: area code boundaries follow telephone rate centers, not ZIP codes.
93117 Goleta93224 Fellows93249 Lost Hills93251 Mc Kittrick93254 New Cuyama93268 Taft93401 San Luis Obispo93402 Los Osos93403 San Luis Obispo93405 San Luis Obispo93406 San Luis Obispo93407 San Luis Obispo93408 San Luis Obispo93409 San Luis Obispo93410 San Luis Obispo93412 Los Osos93420 Arroyo Grande93421 Arroyo Grande93422 Atascadero93423 Atascadero93424 Avila Beach93426 Bradley93427 Buellton93428 Cambria93429 Casmalia93430 Cayucos93432 Creston93433 Grover Beach93434 Guadalupe93435 Harmony93436 Lompoc93437 Lompoc93438 Lompoc93440 Los Alamos93441 Los Olivos93442 Morro Bay93443 Morro Bay93444 Nipomo93445 Oceano93446 Paso Robles
Format a 820 number
US numbers are written as (820) 555-0123 or 820-555-0123. From outside the US, dial +1 820 555 0123.
Is a call from 820 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.