Zip Area Code

Area code 837

Area code 837 is a California area code, in service since January 31, 2025.

It was added as an overlay on 530: both codes serve the same area, so neighbors can have numbers in either one.

Local calls are dialed with 1 plus ten digits.

It is in the Pacific Time zone.

In service since
January 31, 2025
Overlays
530
Local dialing
1 plus ten digits
Time zone
Pacific Time
ZIP codes
246

Map

Map of the 837 area codeThe shaded area shows where 837 numbers are rated, with the neighboring area codes outlined around it.707209541775760916ChicoReddingMarysvilleAuburnDavisSouth TahoeRed BluffYreka
Approximate 837 coverage, drawn from U.S. Census ZIP code areas and NANPA rate centers. Dashed lines are state borders.

Main cities in area code 837

Overlays and neighboring area codes

Overlay, serving the same area: 530.

Neighboring area codes: 510, 707, 209, 541, 208, 775, 559, 760, 415, 916, 925.

Counties in area code 837

Towns in area code 837

And 293 more towns: every town in California.