| Zip Code : | 20838 |
| City : | Barnesville town |
| County : | Montgomery County |
| State : | Maryland (MD) |
| | |
| Land Area : | 2.70 sq mi |
| Water Area : | 0.01 sq mi |
| Latitude : | 39.2181006 |
| Longitude : | -77.3908307 |
| | |
| Population (2010): | 259 |
| Population Estimate (2012) : | 267 |
| Population Density : | 95.86/sq mi |
| Housing Units (2012) : | 109 |
| Median Household Income (2012) : | $155,121 (Maryland : $72,999, USA : $53,046) |
| Median Family Income (2012) : | $149,583 (Maryland : $88,092, USA : $64,585) |
| Median House Price (2012) : | $637,900 (Maryland : $304,900, USA : $181,400) |