| City : | Hartley |
| County : | Darke County, Kearney County, Solano County |
| State : | California (CA) |
| | |
| Land Area : | 6.48 sq mi |
| Water Area : | 0.03 sq mi |
| Latitude : | 38.4203928 |
| Longitude : | -121.9508422 |
| | |
| Population (2010): | 2,510 |
| Population Estimate (2012) : | 2,573 |
| Population Density : | 387.51/sq mi |
| Housing Units (2012) : | 949 |
| Median Household Income (2012) : | $100,123 (California : $61,400, USA : $53,046) |
| Median Family Income (2012) : | $102,377 (California : $69,883, USA : $64,585) |
| Median House Price (2012) : | $463,600 (California : $383,900, USA : $181,400) |