| Zip Code : | 21797 |
| City : | Eldersburg |
| County : | Howard County, Carroll County |
| State : | Maryland (MD) |
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| Land Area : | 43.28 sq mi |
| Water Area : | 0.23 sq mi |
| Latitude : | 39.3281830 |
| Longitude : | -77.0714114 |
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| Population (2010): | 8,839 |
| Population Estimate (2012) : | 8,124 |
| Population Density : | 204.21/sq mi |
| Housing Units (2012) : | 3,079 |
| Median Household Income (2012) : | $120,051 (Maryland : $72,999, USA : $53,046) |
| Median Family Income (2012) : | $131,228 (Maryland : $88,092, USA : $64,585) |
| Median House Price (2012) : | $541,400 (Maryland : $304,900, USA : $181,400) |