837 Area CodeRedding, CA
Area code 837 covers Redding and nearby communities in California, in the Pacific Time (PT) zone, home to about 995,000 people across 278 cities. It overlays 530, so the same region uses both and every local call needs all ten digits.
Overview
- Major City
- Redding
- State
- California (CA)
- Timezone
- Pacific Time (PT)
- Current Time
- Overlay
- Yes – shares area with 530
Where is area code 837?
Area code 837 serves part of Redding, CA and the surrounding areas. It has a single overlay (530) that serves the same area.
Overview of the 837 Area Code
What is the 837 area code?
The 837 area code serves Redding, California, alongside other established area codes. When you see a 837 number, it indicates a local number within this geographic area.
Why was area code 837 created?
The 837 area code was introduced as an overlay to add numbers in Redding once the existing area code 530 began to run out of available prefixes. It added a new supply of numbers without requiring current residents to change their existing digits.
Geographic Coverage of the 837 Area Code
The 837 area code serves Redding and surrounding areas in California. It operates within the Pacific Time (PT) time zone. It complements the coverage of area code 530. This area code covers several key cities, including:
- Chico
- Redding
- Yuba City
- Davis
- Woodland
- El Dorado Hills
Got a call from an 837 number? It came from Redding, CA. Since 837 overlays with 530, every local call in the region needs all ten digits to land on the right line. Inside 837, Redding holds about 10% of the population; the rest is split across 277 smaller cities.
Redding Area Codes Overview
Redding is served by multiple area codes, reflecting its telecommunications needs. The 837 area code operates alongside 530. Here are the area codes serving this region:
The introduction of the 837 area code helped prevent number exhaustion, ensuring a continuous supply of phone numbers across the geographic area.
What cities does area code 837 cover?
| City | State | Population | % of Area Code | % of City |
|---|---|---|---|---|
| Chico | CA | 102,911 | 0% | 100% |
| Redding | CA | 93,502 | 0% | 100% |
| Yuba City | CA | 69,148 | 0% | 100% |
| Davis | CA | 67,125 | 0% | 100% |
| Woodland | CA | 62,983 | 0% | 100% |
| El Dorado Hills | CA | 42,108 | 0% | 22% |
| South Lake Tahoe | CA | 21,225 | 0% | 100% |
| Oroville | CA | 19,712 | 0% | 100% |
| Cameron Park | CA | 18,228 | 0% | 93% |
| Linda | CA | 17,773 | 0% | 100% |
* Sources: Population – U.S. Census Bureau PEP, Vintage 2024 (SUB-IP-EST2024-POP). Area code assignments – NANPA CO Code data. See our data methodology.
Has area code 837 been reported for unwanted calls?
Yes – 1 unwanted-call complaint was reported to the FTC for numbers showing a 837 area code (Jun 8 – Jun 8, 2026).
- 100% robocalls
Most-reported subjects
- Other100%1
* Caller ID is easily spoofed, so these figures reflect the number shown on caller ID, not the caller's true location – an area code alone never identifies a caller. The FTC does not verify the facts in these complaints. Source: FTC Do Not Call (DNC) Reported Calls Data, retrieved 2026-07-05.
Frequently Asked Questions about the 837 Area Code
Who called me from a 837 number?
A 837 number is assigned to Redding, California, so a call may come from there. But caller ID is easy to fake, and scammers often spoof a local 837 code to look nearby, so a 837 number doesn't prove the caller is local. Recently, 1 unwanted-call complaint was reported to the FTC for numbers showing the 837 code (100% flagged as robocalls). If you don't recognize the number, let it go to voicemail; a real caller will leave a message.
Is 837 a scam area code?
No area code is a scam on its own. 837 is a normal, officially assigned code for Redding, California. Spam callers spoof local codes to raise the odds you answer, so 837 on your caller ID says nothing about who is really calling. Recently, 1 unwanted-call complaint was reported to the FTC for numbers showing the 837 code (100% flagged as robocalls). Judge the call itself, not the area code.
Why do I keep getting calls from the 837 area code?
Repeated calls from different 837 numbers are usually spoofing: a robocaller rotates through 837 numbers so each call looks local and slips past simple blocks. Recently, 1 unwanted-call complaint was reported to the FTC for numbers showing the 837 code (100% flagged as robocalls). Blocking one number rarely helps; voicemail screening, your carrier spam filter, and the Do Not Call Registry work better.
Should I answer an unknown 837 number?
If you aren't expecting a 837 call, let it ring to voicemail. Legitimate callers leave a message, most robocallers hang up when no one picks up, and answering can mark your number as active and bring more calls.
How do I block calls from the 837 area code?
Block a single 837 number from your recent-calls list (iPhone: tap the number, then Block this Caller; Android: tap the number, then Block or report spam). To cut the volume, turn on Silence Unknown Callers on iPhone or spam protection on Android, enable spam filtering from your carrier, and register at DoNotCall.gov. Blocking the entire 837 code also stops legitimate local calls, so use it only as a last resort.
Where is area code 837?
Area code 837 covers Redding and the surrounding area in California, spanning 278 cities with about 995,442 residents. It shares its area with overlay code 530.
Is 837 a real area code?
Yes. 837 is an active code in the North American Numbering Plan, assigned by NANPA and in service for Redding, California. A real code can still show up on spoofed spam calls, so treat unknown 837 calls with normal caution.
What timezone is the 837 area code in?
The 837 area code is in the Pacific Time (PT). Because a number can be kept when someone moves or switches to VoIP, a specific 837 caller may not be in that zone.
How do I call a 837 number from abroad?
From outside the US, dial your country's exit code, then 1 (the US country code), then 837 and the seven-digit number. From a mobile phone you can usually just enter +1 837 followed by the number and let the phone add the exit code for you.