| District of California area codes: 661 | |
|---|---|
| Country | United States |
| State/Province | California |
| Major City | Bakersfield |
| Time Zone | Pacific (UTC-08:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 661-304 | Kern | Bakersfield, CA | New Cingular Wireless PCS |
| 661-305 | Los Angeles | Palmdale, CA | Cellco Partnership DBA Verizon Wireless |
| 661-306 | Los Angeles | Lake Hughes, CA | Level 3 Communications |
| 661-307 | Kern | Bakersfield, CA | American Messaging (am) |
| 661-308 | Los Angeles | Palmdale, CA | American Messaging Services |
| 661-309 | Los Angeles | Canyon Country, CA | Mci Worldcom Communications, Ca |
| 661-310 | Los Angeles | Santa Clarita, CA | Broadwing Communications |
| 661-312 | Los Angeles | Santa Clarita, CA | Sprint Spectrum L.p. |
| 661-313 | Los Angeles | Canyon Country, CA | Sprint Spectrum L.p. |
| 661-315 | Los Angeles | Palmdale, CA | American Messaging Services |
| 661-316 | Kern | Bakersfield, CA | Brooks Fiber Communications Of California |
| 661-317 | Los Angeles | Palmdale, CA | T-mobile Usa |
| 661-318 | Kern | Bakersfield, CA | 33 Wireless Inc. |
| 661-319 | Kern | Bakersfield, CA | New Cingular Wireless PCS |
| 661-320 | Kern | Lebec, CA | Pac - West Telecomm |
| 661-321 | Kern | Bakersfield, CA | Pacific Bell |
| 661-322 | Kern | Bakersfield, CA | Pacific Bell |
| 661-323 | Kern | Bakersfield, CA | Pacific Bell |
| 661-324 | Kern | Bakersfield, CA | Pacific Bell |
| 661-325 | Kern | Bakersfield, CA | Pacific Bell |
There are 508 prefixes, In the code area, the major cities are Bakersfield, CA;Delano, CA;Lancaster, CA;Oildale, . The major city is Bakersfield.