| District of California area codes: 707 | |
|---|---|
| Country | United States |
| State/Province | California |
| Major City | Santa Rosa |
| Time Zone | Pacific (UTC-08:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 707-394 | Sonoma | Guerneville, CA | Pac - West Telecomm |
| 707-395 | Sonoma | Healdsburg, CA | Teleport Communications Group - San Francisco |
| 707-396 | Sonoma | Santa Rosa, CA | Sprint Spectrum L.p. |
| 707-397 | Mendocino | Mendocino, CA | Xo California |
| 707-398 | Solano | Fairfield, CA | Broadwing Communications |
| 707-399 | Solano | Fairfield, CA | Pacific Bell |
| 707-400 | Solano | Benicia, CA | O1 Communications |
| 707-401 | Sonoma | Cazadero, CA | O1 Communications |
| 707-402 | Solano | Fairfield, CA | Pac - West Telecomm |
| 707-403 | Napa | Calistoga, CA | Teleport Communications Group - San Francisco |
| 707-404 | Sonoma | Cloverdale, CA | O1 Communications |
| 707-405 | Mendocino | Covelo, CA | O1 Communications |
| 707-406 | Mendocino | Elk, CA | O1 Communications |
| 707-407 | Humboldt | Eureka, CA | O1 Communications |
| 707-408 | Sonoma | Kenwood, CA | 360networks (usa) Inc. |
| 707-409 | Mendocino | Fort Bragg, CA | O1 Communications |
| 707-410 | Solano | Fairfield, CA | O1 Communications |
| 707-412 | Mendocino | Gualala, CA | O1 Communications |
| 707-413 | Lake | Lakeport, CA | O1 Communications |
| 707-414 | Mendocino | Laytonville, CA | O1 Communications |
There are 677 prefixes, In the code area, the major cities are Benicia, CA;Eureka, CA;Fairfield, CA;Napa, CA;Peta. The major city is Santa Rosa.