Howard County

Columbia
Elkridge
Ellicott City
North Laurel
HASC code :US-MD-HO
FIPS 6-4 code :24027
Capital :Ellicott City
Largest city :Columbia
Elevation :High : Columbia 400 ft
Low : North Laurel 0 ft
Population :247,842
Land Area :252 sq mi
(653 km²)
Density :983.50/sq mi
(379.73/km²)
Time zone :UTC -5
Website :http://www.co.ho.md.us