Area Code 837

Area code 837 is one of the newest NANP area codes

Area code 837 is one of the most recently added codes in the North American Numbering Plan, in service since January 31, 2025. It is an overlay that shares its territory with 530, adding fresh numbers as those codes fill up. Existing numbers in the area keep their codes; only new phone lines may be issued a 837 number.

Because 837 is new and unfamiliar, some people are wary when it appears on caller ID and search for “who called me from 837?” An area code only shows where a number is registered, and any number can be spoofed — so a 837 call is not suspicious on its own. Judge each call by what it asks for, not the code. Is a call from 837 a scam?

Frequently asked questions

Where is area code 837?

Area code 837 covers Redding and nearby cities including Chico, Davis, Yuba City in California, in the Pacific Time.

What cities use area code 837?

Area code 837 serves Redding, Chico, Davis, Yuba City, Woodland, and 2 other communities in California.

What time zone is area code 837 in?

Area code 837 is in the Pacific Time (America/Los_Angeles).

How do you dial a 837 number?

Dial all 10 digits: 837 followed by the 7-digit local number. From abroad, dial +1 837 and the local number.

Is a call from area code 837 a scam?

A 837 number is geographically tied to California, but caller ID can be spoofed, so the displayed area code does not prove where a caller really is. If you did not expect the call, do not share personal information and consider looking the number up.

Is 837 a country code?

No. 837 is a US area code (a domestic 3-digit code), not a country code. The country (calling) code for the United States is +1, shared across the North American Numbering Plan. So a full 837 number written for international dialing looks like +1 837 followed by the 7-digit local number.