🇺🇸 837 area code
Area code 837 covers Yuba City, Chico, South Lake Tahoe and Auburn and the surrounding area in California. It shares that territory with 530, so the same neighbourhood can have numbers in any of them. Enter an 837 number below for a free check before you call back.
- Location: Yuba City, California
- Time zone: Pacific (UTC−8)
- In service since January 31, 2025
Nummer abfragen
Gültigkeit, Anbieter, Leitungstyp und Region im ersten Durchgang.
Area code 837 at a glance
- Area code
- 837
- Location
- California, United States
- Main cities
- Yuba City, Chico, South Lake Tahoe, Auburn, Grass Valley, Placerville
- Time zone
- Pacific (UTC−8)
- Local time now
- —
- In service since
- January 31, 2025
- Created from
- 530
- Overlay codes
- 530
- Local calls
- Dial 1 + 10 digits
- Number format
- (837) 555-0123
- From abroad
- +1 837 555 0123
Cities in the 837 overlay area
- Yuba City
- Chico
- South Lake Tahoe
- Auburn
- Grass Valley
- Placerville
- Woodland
- Oroville
- Redding
- Marysville
Is a 837 call a scam?
An area code tells you where a number was first assigned, not where the caller is. Mobile numbers keep their area code when people move, and internet (VoIP) numbers can be picked in any area code — so an 837 number can be calling from anywhere.
Robocallers exploit that with "neighbor spoofing": showing an 837 number to people in California because a local-looking call is more likely to be answered. If an 837 call claims to be your bank, the IRS or a delivery company, hang up and call the official number yourself.
About area code 837
837 entered service on January 31, 2025, as an overlay on 530, which had run short of numbers.
It is part of the 530/837 overlay: the codes cover the same area, and a new line there can be given a number in any of them. Two neighbours — or two phones in one household — can have different area codes. That is also why local calls need the full ten digits.
Because 837 overlays the same ground, the cities listed are those of the codes it shares with.
FAQ
Area code 837 questions
Sources: NANPA NPA database (11/04/2026) and Google libphonenumber. Area codes show where a number was assigned, not where its owner is today.
Where is area code 837?
Area code 837 is in California, United States. It covers Yuba City, Chico, South Lake Tahoe, Auburn, Grass Valley and Placerville.
What time zone is area code 837?
837 is in the Pacific (UTC−8) time zone, and observes daylight saving time.
What area codes overlay 837?
530 serves the same area as 837. Numbers in all of them are local to one another.
When did area code 837 start?
837 entered service on January 31, 2025, created from 530.
How do I find out who called me from 837?
Enter the full number in the lookup at the top of this page. The free check confirms whether the number is valid and shows its carrier, line type and region; a full report adds owner and public-web records where they are available.
Why am I getting calls from area code 837?
If you live in or near California, they may be genuinely local — or robocalls spoofing a local-looking number. Unknown 837 callers who will not leave a message are best looked up before you call back.
Got a call from 837?
Run the free check first — validity, carrier, line type and region — and unlock the full report only if you need it.