21104 Frequently Asked Questions

A: ZIP Code 21104 is Located in Marriottsville Maryland. Portions of 21104 are also in Eldersburg, Ellicott City.

A: ZIP Code 21104 is Located Primarily in Carroll County Maryland with Portions in Howard County and Baltimore County.

A: The Current Sales Tax in ZIP Code 21104 is 6.0%

A: The Area Codes for 21104 are 410, 443 and 667

A: 21104 is within by the Maryland 2nd Congressional District and the Maryland 3rd Congressional District.

A: 21104 is within Maryland State House of Delegates District 05, Maryland State House of Delegates District 10 and Maryland State House of Delegates District 09A.

A: 21104 is within Maryland State Senate District 05, Maryland State Senate District 09 and Maryland State Senate District 10.

A: The 2022 population of ZIP Code 21104 is 6077. The population growth rate in 21104 is 30.04%. The population density of 21104 is 359.

A: The majority race/ethnicity of people residing in 21104 is White (80.88%). The majority race/ethnicity of students attending public schools in 21104 is White(42.39%).

A: The median household income in 21104 is $180,789 (2021) and the average adjusted income is $483,210 (2021).
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