| Zip Code : | 21075 |
| City : | Columbia, Elkridge, Ilchester |
| County : | Howard County |
| State : | Maryland (MD) |
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| Land Area : | 14.51 sq mi |
| Water Area : | 0.06 sq mi |
| Latitude : | 39.2033633 |
| Longitude : | -76.7504439 |
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| Population (2010): | 26,344 |
| Population Estimate (2012) : | 26,220 |
| Population Density : | 1,815.47/sq mi |
| Housing Units (2012) : | 10,215 |
| Median Household Income (2012) : | $87,831 (Maryland : $72,999, USA : $53,046) |
| Median Family Income (2012) : | $106,403 (Maryland : $88,092, USA : $64,585) |
| Median House Price (2012) : | $327,500 (Maryland : $304,900, USA : $181,400) |