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| City : | Pioneer |
| County : | Amador County |
| State : | California (CA) |
| Land Area : | 4.32 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 38.4354797 |
| Longitude : | -120.5848577 |
| Population (2010): | 1,094 |
| Population Estimate (2012) : | 997 |
| Population Density : | 253.21/sq mi |
| Housing Units (2012) : | 600 |
| Median Household Income (2012) : | $36,146 (California : $61,400, USA : $53,046) |
| Median Family Income (2012) : | $70,238 (California : $69,883, USA : $64,585) |
| Median House Price (2012) : | $259,800 (California : $383,900, USA : $181,400) |