Area code 837 covers Redding and surrounding areas in California. It was activated in 2025 as an overlay of area code 530. For the full picture, see all California area codes.
| State | California |
|---|---|
| Primary city | Redding |
| Cities also served | Redding, Chico, Davis, Woodland, Yuba City, South Lake Tahoe, Truckee, Red Bluff |
| Time zone | Pacific (UTC-8 / UTC-7 DST) |
| Year established | January 31, 2025 |
| Original 1947 NPA? | No |
| Parent code | 530 |
| Overlay codes | 530 |
| Currently in use? | Yes, actively assigned |
| Ten-digit dialing required? | Yes |
Cities Served by Area Code 837
Area code 837 serves Northeastern and northern California — the former 530 numbering plan area, covering Alpine, Butte, Colusa, El Dorado, Glenn, Humboldt, Lassen, Modoc, Mono, Nevada, Placer, Plumas, Shasta, Sierra, Siskiyou, Solano, Sutter, Tehama, Trinity, Yolo, and Yuba counties, including the following cities and communities:
- Redding
- Chico
- Davis
- Woodland
- Yuba City
- South Lake Tahoe
- Truckee
- Red Bluff
Nearby area codes covering the same broader region include: 530, 916, 279.
How to Get a 837 Phone Number
There are three ways to get a phone number with the 837 area code, each suited to a different need:
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Browse 837 Numbers →- Buy from a premium-number specialist. Companies that hold curated inventories of specific area codes can sell you a 837 number directly, often with a one-time fee and ownership transferred to you (no recurring carrier fees). This is the option for picking a specific memorable number, or for getting an area code that most carriers won’t let you request. Browse our 837 inventory.
- Sign up with a VoIP carrier. Voice-over-IP services (such as Google Voice, OpenPhone, Grasshopper, and many others) can typically provision a 837 number on request, especially for active overlay codes. You won’t usually get to pick the specific number, but you’ll get a working line in the area code. This is the cheapest option for anyone who doesn’t need a particular number.
- Port an existing 837 number. If you already have a 837 phone number with another carrier, you can transfer it (port it) to a new service provider while keeping the number. This works for landlines, cell phones, and VoIP services, though landlines outside of California sometimes can’t accept inbound ports of 837 numbers due to 911 routing rules.
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Frequently Asked Questions
Is the 837 area code still in use?
Yes. 837 is actively assigned to new phone lines in Northeastern and northern California — the former 530 numbering plan area, covering Alpine, Butte, Colusa, El Dorado, Glenn, Humboldt, Lassen, Modoc, Mono, Nevada, Placer, Plumas, Shasta, Sierra, Siskiyou, Solano, Sutter, Tehama, Trinity, Yolo, and Yuba counties.
What is the difference between 837 and 530?
Today they share the same geographic territory in California. New phone lines in the area may be assigned either code. The two codes work identically for calling, billing, and service.
What is the parent area code of 837?
Area code 837 is an overlay of 530. Both codes serve the same region of California.
Can I get a 837 number if I don't live in California?
Yes. Phone numbers are no longer tied to a physical address. With VoIP service or a number broker, you can hold a 837 number from anywhere in the world. The number routes to whatever device or carrier you specify.
Is 837 a scam area code?
No. 837 is a legitimate, active area code for Northeastern and northern California — the former 530 numbering plan area, covering Alpine, Butte, Colusa, El Dorado, Glenn, Humboldt, Lassen, Modoc, Mono, Nevada, Placer, Plumas, Shasta, Sierra, Siskiyou, Solano, Sutter, Tehama, Trinity, Yolo, and Yuba counties. Like any area code, scammers occasionally spoof 837 caller IDs, but the code itself is heavily used by real California businesses, government offices, and residents.
When did area code 837 go into service?
Area code 837 went into service on January 31, 2025, assigned by the California Public Utilities Commission on June 8, 2023, as an overlay for the 530 area code.
What area does the 837 area code cover?
Area code 837 covers the same geographic footprint as 530 — most of northeastern California, including all or parts of 21 counties and cities such as Redding, Chico, Davis, Woodland, Yuba City, South Lake Tahoe, and Truckee.
Do I need to dial 10 digits when calling an 837 number?
Yes. Because 837 is an overlay sharing territory with 530, ten-digit dialing (area code + seven-digit number) is required for all local calls within the region. No permissive dialing period was needed since ten-digit dialing was already in effect.
Why was the 837 area code created?
The 530 area code was forecast to exhaust its available numbers by late 2025. Rather than splitting the region geographically, regulators added 837 as an overlay so that new subscribers could receive 837 numbers while existing 530 numbers remained unchanged.
Related Reading
- Most Desirable Area Codes
- How Do Area Codes Work?
- How Are Area Codes Assigned?
- Why the Right Area Code Matters
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