530 area code — Chico, CA geographic
- State
- California
- Major area
- Chico
- Time zone
- Pacific
- In service since
- 1997-11-01
- Split from
- 916
- Overlay complex
- 530 / 837
- Active prefixes
- 776
- Rate centers
- 131
- Carriers
- 56
- Projected exhaust
- 3Q 2092
Area code 530 is a geographic code serving Chico, California in the Pacific time zone. It has been in service since November 1, 1997. It is part of the 530/837 overlay complex — these codes share the same territory. Note that porting and VoIP mean a 530 number can be used from anywhere — the code marks where the number was assigned.
776 central-office prefixes are currently active in this code, spread across 56 code-holding carriers. Thousands-block pooling applies to 636 prefixes, so a single prefix can belong to several carriers. Its prefixes map to 131 distinct rate centers.
530 was created from 916 in 1997. It has since spawned 837 (2025).
NANPA projects numbering capacity for the 530/837 complex to exhaust in 3Q 2092.
Dialing: 1+10D locally, 1+10D to other codes.
Among California codes, 530 stands out as covers more rate centers (131) than any other California area code.
If a 530 call asks for money or personal data, treat the displayed number as unverified: hang up and reach the organization through its published number. Numbering data locates numbers, not callers.
Largest localities in 530
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Chico | 64 | 916 |
| Redding | 59 | — |
| Marysville | 51 | — |
| Auburn:main Da | 38 | — |
| Davis | 32 | — |
| Woodland | 26 | — |
| Placerville:west Da | 25 | — |
| Grass Valley: Main Da | 23 | — |
| Oroville | 22 | — |
| South Tahoe | 19 | — |
FAQ
Why do 837 and 530 cover the same place?
They are overlays: when a code runs low on numbers, a new code is added over the same territory instead of splitting it. The 530/837 complex shares one service area, and local calls are dialed with 10 digits.
Will 530 run out of numbers?
NANPA's current forecast projects exhaust in 3Q 2092 — decades of capacity remain.
Why am I getting spam calls from 530 numbers?
Scammers spoof recognizable area codes so calls look local or familiar. A displayed 530 number does not prove the call originated there — see our guide to spotting spoofed calls.
Where is a 530 number from?
530 is assigned to Chico and surrounding areas of California in the Pacific time zone. The three digits after the area code (the prefix) narrow it down to a rate center.
Is 530 a toll-free number?
No. 530 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.