| County : | Howard County |
| State : | Maryland (MD) |
| Land Area : | 250.74 sq mi |
| Water Area : | 2.65 sq mi |
| Latitude : | 39.2522639 |
| Longitude : | -76.9244057 |
| Population (2010): | 287,085 |
| Population Estimate (2012) : | 288,676 |
| Population Density : | 1,144.95/sq mi |
| Housing Units (2012) : | 109,282 |
| Median Household Income (2012) : | $107,821 (Maryland : $72,999, USA : $53,046) |
| Median Family Income (2012) : | $126,530 (Maryland : $88,092, USA : $64,585) |
| Median House Price (2012) : | $435,300 (Maryland : $304,900, USA : $181,400) |
Howard County Cities / Towns
| Columbia (99,615) | Elkridge (15,593) | Ellicott City (65,834) |
| Fulton (2,049) | Highland (1,034) | Ilchester (23,476) |
| Jessup (7,137) | North Laurel (4,474) | Savage (7,054) |
| Scaggsville (24,333) |
Howard County Zip Codes
| 20701 (2) | 20723 (28,972) | 20759 (3,355) |
| 20763 (2,664) | 20777 (3,314) | 20794 (14,098) |
| 20833 (7,735) | 21029 (11,333) | 21036 (2,114) |
| 21042 (38,076) | 21043 (42,246) | 21044 (41,704) |
| 21045 (38,288) | 21046 (15,080) | 21075 (26,344) |
| 21076 (12,952) | 21104 (4,601) | 21163 (7,026) |
| 21723 (803) | 21737 (1,458) | 21738 (3,268) |
| 21771 (29,563) | 21784 (37,941) | 21794 (2,434) |
| 21797 (8,839) |