| Zip Code : | 21042 |
| City : | Columbia, Ellicott City |
| County : | Howard County |
| State : | Maryland (MD) |
| | |
| Land Area : | 37.49 sq mi |
| Water Area : | 0.17 sq mi |
| Latitude : | 39.2771813 |
| Longitude : | -76.8946024 |
| | |
| Population (2010): | 38,076 |
| Population Estimate (2012) : | 39,556 |
| Population Density : | 1,015.67/sq mi |
| Housing Units (2012) : | 13,587 |
| Median Household Income (2012) : | $137,810 (Maryland : $72,999, USA : $53,046) |
| Median Family Income (2012) : | $150,485 (Maryland : $88,092, USA : $64,585) |
| Median House Price (2012) : | $567,100 (Maryland : $304,900, USA : $181,400) |