21045 Frequently Asked Questions

A: ZIP Code 21045 is Located in Columbia Maryland. Portions of 21045 are also in Ellicott City.

A: ZIP Code 21045 is Located Entirely in Howard County Maryland.

A: The Current Sales Tax in ZIP Code 21045 is 6.0%

A: The Area Codes for 21045 are 240, 301, 410, 443 and 667

A: ZIP Code 21045 is in the Maryland 3rd Congressional District.

A: 21045 is within Maryland State House of Delegates District 13 and Maryland State House of Delegates District 12A.

A: 21045 is within Maryland State Senate District 12 and Maryland State Senate District 13.

A: The 2022 population of ZIP Code 21045 is 40980. The population growth rate in 21045 is 1.99%. The population density of 21045 is 4,170.

A: The majority race/ethnicity of people residing in 21045 is White (47.04%). The majority race/ethnicity of students attending public schools in 21045 is African American(38.60%).

A: The median household income in 21045 is $110,111 (2021) and the average adjusted income is $310,320 (2021).