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| City : | Diamond Bar City |
| County : | Los Angeles County |
| State : | California (CA) |
| Land Area : | 14.88 sq mi |
| Water Area : | 0.01 sq mi |
| Latitude : | 34.0015725 |
| Longitude : | -117.8176013 |
| Population (2010): | 55,544 |
| Population Estimate (2012) : | 55,810 |
| Population Density : | 3,732.93/sq mi |
| Housing Units (2012) : | 18,455 |
| Median Household Income (2012) : | $90,181 (California : $61,400, USA : $53,046) |
| Median Family Income (2012) : | $96,966 (California : $69,883, USA : $64,585) |
| Median House Price (2012) : | $531,400 (California : $383,900, USA : $181,400) |