| District of California area codes: 310 | |
|---|---|
| Country | United States |
| State/Province | California |
| Major City | Los Angeles |
| Time Zone | Pacific (UTC-08:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 310-322 | Los Angeles | El Segundo, CA | Pacific Bell |
| 310-323 | Los Angeles | Gardena, CA | Pacific Bell |
| 310-324 | Los Angeles | Gardena, CA | Pacific Bell |
| 310-325 | Los Angeles | Lomita, CA | Pacific Bell |
| 310-326 | Los Angeles | Lomita, CA | Pacific Bell |
| 310-327 | Los Angeles | Gardena, CA | Pacific Bell |
| 310-328 | Los Angeles | Torrance, CA | Pacific Bell |
| 310-329 | Los Angeles | Gardena, CA | Pacific Bell |
| 310-330 | Los Angeles | Inglewood, CA | Pacific Bell |
| 310-331 | Los Angeles | Hawthorne, CA | Pacific Bell |
| 310-332 | Los Angeles | Hawthorne, CA | Pacific Bell |
| 310-333 | Los Angeles | El Segundo, CA | Pacific Bell |
| 310-334 | Los Angeles | El Segundo, CA | Pacific Bell |
| 310-335 | Los Angeles | El Segundo, CA | Pacific Bell |
| 310-336 | Los Angeles | El Segundo, CA | Pacific Bell |
| 310-337 | Los Angeles | Inglewood, CA | Pacific Bell |
| 310-338 | Los Angeles | Inglewood, CA | Pacific Bell |
| 310-339 | Los Angeles | Los Angeles, CA | Cellco Partnership DBA Verizon Wireless |
| 310-340 | Los Angeles | Torrance, CA | American Messaging (am) |
| 310-341 | Los Angeles | Los Angeles, CA | Teleport Communications Group - Los Angeles |
There are 787 prefixes, In the code area, the major cities are Beverly Hills, CA;Carson, CA;Culver City, CA;Garde. The major city is Los Angeles.