City · California · United States
Pioneer, CA — ZIP codes
1 ZIP code · Amador County
- City
- Pioneer
- County
- Amador
- State
- California
- Country
- United States
- Postal code
- 95666Single source
- Coordinates
- 38.4319, -120.5719 View on OpenStreetMap
ZIP codes (1)
| Postal code | Place name | Verification |
|---|---|---|
| 95666 | Pioneer | Single source |
Sources and verification
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS). Last generated : 2026-08-21. Report an error.