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| County : | Napa County |
| State : | California (CA) |
| Land Area : | 748.36 sq mi |
| Water Area : | 40.22 sq mi |
| Latitude : | 38.5073511 |
| Longitude : | -122.3259947 |
| Population (2010): | 136,484 |
| Population Estimate (2012) : | 136,644 |
| Population Density : | 182.38/sq mi |
| Housing Units (2012) : | 54,759 |
| Median Household Income (2012) : | $69,571 (California : $61,400, USA : $53,046) |
| Median Family Income (2012) : | $80,027 (California : $69,883, USA : $64,585) |
| Median House Price (2012) : | $460,400 (California : $383,900, USA : $181,400) |
Napa County Cities / Towns
| American Canyon City (19,454) | Angwin (3,051) | Calistoga City (5,155) |
| Deer Park (1,267) | Moskowite Corner (211) | Napa City (76,915) |
| Oakville (71) | Rutherford (164) | St. Helena City (5,814) |
| Silverado Resort (1,095) | Yountville City (2,933) |
Napa County Zip Codes
| 94503 (19,681) | 94508 (3,661) | 94515 (7,050) |
| 94558 (66,830) | 94559 (27,184) | 94567 (623) |
| 94573 (94) | 94574 (8,742) | 94576 (164) |
| 94589 (29,876) | 94599 (3,021) |