530 Area Code | Location Map, Time Zone, and Phone Lookup

The 530 area code region was formed in 1997 when the CPUC approved an area code split of the 916 area code, introducing the 530 area code. The 530 area code is in the northeastern portion of California.

The 530 area code covers most of the northeastern portion of California, including all or portions of Alpine, Butte, Colusa, El Dorado, Glenn, Humboldt, Lassen, Modoc, Mono, Nevada, Placer, Plumas, Shasta, Sierra, Siskiyou, Solano, Sutter, Tehama, Trinity, Yolo, and Yuba counties. It serves cities and communities including but not limited to Chico, Davis, El Dorado Hills, Oroville, Paradise, Placerville, Red Bluff, Redding, South Lake Tahoe, Truckee, Woodland, and Yuba City, as well as unincorporated areas.

Rate Centers

1. Area codes are geographically specific.

2. Each area code is divided into local serving area called rate centers.

3. There are 131 rate centers in the 530 area code.

4. The 530 area code is in the northeastern portion of California.

5. 73 service providers provide phone service within the 530 area code.

6. The 530 geographic area covers all or portions of Alpine, Butte, Colusa, El Dorado, Glenn, Humboldt, Lassen, Modoc, Mono, Nevada, Placer, Plumas, Shasta, Sierra, Siskiyou, Solano, Sutter, Tehama, Trinity, Yolo, and Yuba counties.

Number of Prefixes Remaining

As of October 11, 2022, the 530 area code has 40 available prefixes or about 5% remaining. The available prefixes are expected to run out or “exhaust” by September of 2025.

A new area code, or relief, is needed to replenish the supply of prefixes.

Each prefix is uniquely assigned to a rate center.

All current customers will keep their existing area code and telephone number.

Customers in this area may be assigned a number in the new area code when 530 area code prefixes are no longer available for assignment.

Below are some tips to help prepare for the area code overlay:

• Contact security or alarm vendors to update dial-up numbers to avoid a break in security routines and contacts.
• Reprogram equipment or features, i.e., automatic dial, speed-dial, call forwarding, modems for computer or Internet dial-up access, etc.
• Update items like stationery, checks, etc., to include your area code + telephone number.
• Provide your area code and telephone number, not just the telephone number, as needed.
• When asking for someone’s number, remember to ask for the area code too.
• Remember that the previous area code and the new area code will co-exist within the same geographic region.

The 530 area code was formed in 1997 when the CPUC approved an area code split of the 916 area code, introducing the 530 area code.