21738 Frequently Asked Questions

A: ZIP Code 21738 is Located in Glenwood Maryland.

A: ZIP Code 21738 is Located Entirely in Howard County Maryland.

A: The Current Sales Tax in ZIP Code 21738 is 6.0%

A: The Area Codes for 21738 are 410, 443 and 667

A: ZIP Code 21738 is in the Maryland 3rd Congressional District.

A: ZIP Code 21738 is in Maryland State House of Delegates District 09A.

A: ZIP Code 21738 is in Maryland State Senate District 09.

A: The 2022 population of ZIP Code 21738 is 3786. The population growth rate in 21738 is 0.00%. The population density of 21738 is 645.

A: The majority race/ethnicity of people residing in 21738 is White (95.53%). The majority race/ethnicity of students attending public schools in 21738 is White(70.05%).

A: The median household income in 21738 is $230,250 (2021) and the average adjusted income is $588,000 (2021).
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