| District of California area codes: 415 | |
|---|---|
| Country | United States |
| State/Province | California |
| Major City | San Francisco |
| Time Zone | Pacific (UTC-08:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 415-367 | Marin | Sausalito, CA | Xo California |
| 415-368 | San Francisco | San Francisco, CA | Xo California |
| 415-369 | San Francisco | San Francisco, CA | Pacific Bell |
| 415-370 | San Francisco | San Francisco, CA | New Cingular Wireless PCS |
| 415-371 | San Francisco | San Francisco, CA | Pacific Bell |
| 415-372 | San Francisco | San Francisco, CA | American Messaging Services |
| 415-373 | San Francisco | San Francisco, CA | Global Crossing Local Services-ca |
| 415-374 | San Francisco | San Francisco, CA | Pacific Bell |
| 415-375 | San Francisco | San Francisco, CA | Global Crossing Local Services-ca |
| 415-376 | Alameda | Oakland, CA | Pac - West Telecomm |
| 415-377 | San Mateo | Brisbane, CA | Sprint Spectrum L.p. |
| 415-378 | San Mateo | Brisbane, CA | Sprint Spectrum L.p. |
| 415-379 | San Francisco | San Francisco, CA | Pacific Bell |
| 415-380 | Marin | Mill Valley, CA | Pacific Bell |
| 415-381 | Marin | Mill Valley, CA | Pacific Bell |
| 415-382 | Marin | Ignacio, CA | Pacific Bell |
| 415-383 | Marin | Mill Valley, CA | Pacific Bell |
| 415-384 | Marin | Mill Valley, CA | Pacific Bell |
| 415-385 | San Francisco | San Francisco, CA | Cellco Partnership DBA Verizon Wireless |
| 415-386 | San Francisco | San Francisco, CA | Pacific Bell |
There are 749 prefixes, In the code area, the major cities are Novato, CA;San Anselmo, CA;San Francisco, CA;San R. The major city is San Francisco.