Area code 837 — California
Area code 837 is in California and serves Redding, Auburn, Chico, Davis. Time zone, overlays, counties and ZIP codes.
| Location | California (Redding, Auburn, Chico, Davis, the California shore of Lake Tahoe, Placerville, Susanville, Truckee, Yreka, and most of northeastern California) |
|---|---|
| Main places | Redding, Auburn, Chico, Davis, California shore of Lake Tahoe, Placerville, Susanville, Truckee, Yreka |
| State | California |
| Status | In service · since 2025 |
| Time zone | Pacific · |
| Overlay codes | 530 Overlays share the same area. Local calls usually need 10-digit dialing. |
| Local dialing | 1+10D |
History
- Overlaid on 530
- California's 40th area code
Counties (approximate)
Alpine CountyAmadorAmador CountyButteButte CountyCalaverasCalaveras CountyColusa CountyEl DoradoEl Dorado CountyGlenn CountyLassenLassen CountyModoc CountyMono CountyNevadaNevada CountyPlacer CountyPlumasPlumas CountySacramentoSacramento CountyShastaShasta CountySierra CountySiskiyou CountySolanoSolano CountyStanislaus CountySutter
ZIP codes in area code 837
Approximate: area code boundaries follow telephone rate centers, not ZIP codes.
93517 Bridgeport95221 Altaville95222 Angels Camp95223 Arnold95224 Avery95225 Burson95226 Campo Seco95228 Copperopolis95229 Douglas Flat95230 Farmington95232 Glencoe95233 Hathaway Pines95245 Mokelumne Hill95246 Mountain Ranch95247 Murphys95248 Rail Road Flat95249 San Andreas95251 Vallecito95252 Valley Springs95254 Wallace95255 West Point95257 Wilseyville95309 Chinese Camp95310 Columbia95327 Jamestown95335 Long Barn95346 Mi Wuk Village95364 Pinecrest95370 Sonora95372 Soulsbyville95373 Standard95375 Strawberry95379 Tuolumne95383 Twain Harte95595 Zenia95601 Amador City95602 Auburn95603 Auburn95604 Auburn95606 Brooks
Format a 837 number
US numbers are written as (837) 555-0123 or 837-555-0123. From outside the US, dial +1 837 555 0123.
Is a call from 837 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.