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> California > Zip Code 91977
| Zip Code : | 91977 |
| City : | Casa de Oro-Mount Helix, La Presa, Lemon Grove city, Spring Valley |
| County : | San Diego County |
| State : | California (CA) |
| Land Area : | 9.67 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 32.7262363 |
| Longitude : | -116.9943181 |
| Population (2010): | 58,368 |
| Population Estimate (2012) : | 60,769 |
| Population Density : | 6,038.89/sq mi |
| Housing Units (2012) : | 19,167 |
| Median Household Income (2012) : | $59,858 (California : $61,400, USA : $53,046) |
| Median Family Income (2012) : | $64,310 (California : $69,883, USA : $64,585) |
| Median House Price (2012) : | $316,300 (California : $383,900, USA : $181,400) |