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Alta Sierra, CA Area Code
Alta Sierra, California (population 7,061) uses area code 530.
Alta Sierra has no telephone exchange of its own in NANPA records; it is served by the Colfax exchange about 9 km away.
Carriers with Alta Sierra numbers
6 prefixes are assigned to the Colfax exchange: 0% mobile, 67% VoIP and cable, 33% landline.
| Carrier | Prefixes |
|---|---|
| Onvoy (Sinch) | 2 |
| Frontier | 1 |
| AT&T (Teleport) | 1 |
| Bandwidth | 1 |
| Fractel | 1 |
Area codes used in Alta Sierra
| Area code | Prefixes serving Alta Sierra | Main carriers in this code |
|---|---|---|
| 530 | 6 | AT&T (Pacific Bell), Onvoy (Sinch), AT&T Mobility |
Alta Sierra phone number prefixes
Numbers starting with these first six digits were originally assigned to the Colfax exchange.
530-323Onvoy (Sinch)530-346Frontier530-349AT&T (Teleport)530-512Onvoy (Sinch)530-819Bandwidth530-866Fractel
Nearby cities in area code 530
- Chico
- Redding
- Yuba City
- Davis
- Woodland
- Linda
- South Lake Tahoe
- Oroville
- Olivehurst
- Cameron Park
- Truckee
- Live Oak
Questions
- What is the area code for Alta Sierra, CA?
- The area code for Alta Sierra, California is 530.
- What time zone is Alta Sierra in?
- Alta Sierra is in the Pacific time zone.