21778 Frequently Asked Questions

A: ZIP Code 21778 is Located in Rocky Ridge Maryland.

A: ZIP Code 21778 is Located Entirely in Frederick County Maryland.

A: The Current Sales Tax in ZIP Code 21778 is 6.0%

A: The Area Codes for 21778 are 240 and 301

A: ZIP Code 21778 is in the Maryland 6th Congressional District.

A: ZIP Code 21778 is in Maryland State House of Delegates District 04.

A: ZIP Code 21778 is in Maryland State Senate District 04.

A: The 2022 population of ZIP Code 21778 is 880. The population growth rate in 21778 is -50.07%. The population density of 21778 is 53.

A: The majority race/ethnicity of people residing in 21778 is White (100.00%).

A: The median household income in 21778 is $54,706 (2021) and the average adjusted income is $338,430 (2021).