| Zip Code : | 21104 |
| City : | Eldersburg, Ellicott City |
| County : | Howard County, Baltimore County, Carroll County |
| State : | Maryland (MD) |
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| Land Area : | 16.98 sq mi |
| Water Area : | 0.74 sq mi |
| Latitude : | 39.3469035 |
| Longitude : | -76.9127573 |
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| Population (2010): | 4,601 |
| Population Estimate (2012) : | 5,018 |
| Population Density : | 270.94/sq mi |
| Housing Units (2012) : | 1,506 |
| Median Household Income (2012) : | $128,636 (Maryland : $72,999, USA : $53,046) |
| Median Family Income (2012) : | $140,721 (Maryland : $88,092, USA : $64,585) |
| Median House Price (2012) : | $501,900 (Maryland : $304,900, USA : $181,400) |