Phone numbers in Mariposa, California
Mariposa has 4 phone prefixes in area codes 209, 350.
Biggest holders: Verizon Wireless, Sierra Tel. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 50%
- Phone company 50%
Every prefix in Mariposa
Search the first six digits of a number in this list. If it's here, the number started in Mariposa with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 209-347 | Verizon Wireless | Mobile carrier | – |
| 209-742 | Sierra Tel | Phone company | – |
| 209-966 | Sierra Tel | Phone company | – |
| 350-245 | Verizon Wireless | Mobile carrier | 2025 |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.