837 area code
Chico area, Pacific Time.Area code 837 covers Chico, Redding, Red Bluff and 122 more places in California, on Pacific Time. 530 covers the same area.
Right now in Chico
Pacific Time (PST, UTC-8; PDT, UTC-7 in summer)
Calling hours: Every day, 8 AM to 9 PM (the federal rule)
Small talk
Calling a lot of them? RegieGO dials up to five lines at once. See the dialer
Where 837 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 837 has 125. Each one's share is how many 837 numbers start there. Its biggest metro area is Sacramento--Roseville--Folsom, CA.
- Chico33%
- Redding33%
- Red Bluff33%
- Marysville0%
Also: Auburn, Placerville, Davis, Grass Valley, Woodland, Oroville, South Tahoe, North Tahoe, Truckee, Shingle Springs, Anderson, Yreka + 109 more
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call an 837 number?
Sales calls to homes and cell phones have legal hours, set by the federal rule. Hold every 837 number to them, since you can't tell a work line from a personal cell.
What applies to 837Every day, 8 AM to 9 PM
- Federal (TCPA and FTC rule)Every day, 8 AM to 9 PMCalls to residential and mobile numbers. Most calls to businesses are exempt from the FTC's rule.47 CFR 64.1200(c)(1); 16 CFR 310.4(c) (opens in a new tab)
Local time comes from the area code, not from where the person is today. Mobiles keep their number when they move. Calling hours here are a guide, not legal advice. Every state's calling hours, with sources
837 and 530
837 went into service on January 31, 2025. 837 and 530 cover the same area, so new numbers can get either code and neighbors can have different area codes. 837 holds under 1% of the area's exchanges; 530 holds the most. Local calls take all 10 digits.
- 1997530 overlay
- 2025837 starts
Source: NANPA area code database
Other California area codes
All California area codes- Stockton209350
- Los Angeles213323738
- Sacramento279916
- Compton310424
- Oakland341510
- Fresno357559
- Santa Rosa369707
- San Jose408669
- San Francisco415628
- Oceanside442760
- Long Beach562
- San Diego619858
- Alhambra626
- Palo Alto650
- Anaheim657714
- Bakersfield661
- Van Nuys747818
- Santa Barbara805820
- Salinas831
- Ontario840909
- Walnut Creek925
- Irvine949
- Riverside951
Calling a list of 837 numbers?
Paste it into the free phone number validator. It checks every number, finds each one's time zone and sorts the list by who you can call right now.
837 area code FAQ
What area code is 837?
837 is a California area code for Chico, Redding, Red Bluff, Marysville and 121 more places.
What time zone is the 837 area code in?
Pacific Time (PST, UTC-8; PDT, UTC-7 in summer).
Is 530 the same as 837?
Same area, different code. 837 and 530 cover the same area (an overlay), so new numbers can get any of them and local calls take all 10 digits.
What are the calling hours for 837 numbers?
Every day, 8 AM to 9 PM, local time, under the federal rule.
When did the 837 area code start?
On January 31, 2025.
Calling 837 numbers? Reach more of them.
RegieGO researches every account and dials up to five lines at once while you talk. 250 free credits, no credit card.