| City : | Eldersburg |
| County : | Carroll County |
| State : | Maryland (MD) |
| Land Area : | 39.69 sq mi |
| Water Area : | 2.54 sq mi |
| Latitude : | 39.4028607 |
| Longitude : | -76.9546009 |
| Population (2010): | 30,531 |
| Population Estimate (2012) : | 31,650 |
| Population Density : | 769.22/sq mi |
| Housing Units (2012) : | 10,844 |
| Median Household Income (2012) : | $100,564 (Maryland : $72,999, USA : $53,046) |
| Median Family Income (2012) : | $115,618 (Maryland : $88,092, USA : $64,585) |
| Median House Price (2012) : | $373,800 (Maryland : $304,900, USA : $181,400) |