| 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 |
|---|---|---|---|
| 415-200 | San Francisco | San Francisco, CA | O1 Communications |
| 415-201 | San Francisco | San Francisco, CA | American Messaging (am) |
| 415-202 | San Francisco | San Francisco, CA | Pacific Bell |
| 415-203 | San Francisco | San Francisco, CA | New Cingular Wireless PCS |
| 415-204 | San Francisco | San Francisco, CA | American Messaging (am) |
| 415-205 | San Francisco | San Francisco, CA | New Cingular Wireless PCS |
| 415-206 | San Francisco | San Francisco, CA | Pacific Bell |
| 415-207 | San Francisco | San Francisco, CA | Usa Mobility Wireless |
| 415-208 | San Francisco | San Francisco, CA | Usa Mobility Wireless |
| 415-209 | Marin | Novato, CA | Verizon California Inc.-ca (gte) |
| 415-210 | San Francisco | San Francisco, CA | Usa Mobility Wireless |
| 415-213 | San Francisco | San Francisco, CA | U.s. Telepacific Corp. |
| 415-215 | San Francisco | San Francisco, CA | New Cingular Wireless PCS |
| 415-216 | Alameda | Oakland, CA | Teleport Communications Group - San Francisco |
| 415-217 | San Francisco | San Francisco, CA | Pacific Bell |
| 415-218 | San Francisco | San Francisco, CA | New Cingular Wireless PCS |
| 415-219 | San Francisco | San Francisco, CA | Usa Mobility Wireless |
| 415-220 | San Francisco | San Francisco, CA | Usa Mobility Wireless |
| 415-221 | San Francisco | San Francisco, CA | Pacific Bell |
| 415-222 | 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.