| Zip Code : | 20659 |
| City : | Charlotte Hall, Golden Beach, Mechanicsville |
| County : | Charles County, St. Mary's County |
| State : | Maryland (MD) |
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| Land Area : | 93.82 sq mi |
| Water Area : | 11.24 sq mi |
| Latitude : | 38.4186727 |
| Longitude : | -76.7324490 |
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| Population (2010): | 23,498 |
| Population Estimate (2012) : | 23,320 |
| Population Density : | 250.46/sq mi |
| Housing Units (2012) : | 8,150 |
| Median Household Income (2012) : | $89,359 (Maryland : $72,999, USA : $53,046) |
| Median Family Income (2012) : | $93,427 (Maryland : $88,092, USA : $64,585) |
| Median House Price (2012) : | $308,100 (Maryland : $304,900, USA : $181,400) |