21771 Frequently Asked Questions

A: ZIP Code 21771 is Located in Mount Airy Maryland. Portions of 21771 are also in Green Valley, Lisbon, Unionville.

A: ZIP Code 21771 is Located Primarily in Frederick County Maryland with Portions in Carroll County and Howard County.

A: The Current Sales Tax in ZIP Code 21771 is 6.0%

A: The Area Codes for 21771 are 240, 301, 410, 443 and 667

A: 21771 is within by the Maryland 6th Congressional District, the Maryland 3rd Congressional District, the Maryland 2nd Congressional District and the Maryland 8th Congressional District.

A: 21771 is within Maryland State House of Delegates District 04, Maryland State House of Delegates District 05, Maryland State House of Delegates District 14 and Maryland State House of Delegates District 09A.

A: 21771 is within Maryland State Senate District 04, Maryland State Senate District 05, Maryland State Senate District 09 and Maryland State Senate District 14.

A: The 2022 population of ZIP Code 21771 is 31653. The population growth rate in 21771 is 8.14%. The population density of 21771 is 383.

A: The majority race/ethnicity of people residing in 21771 is White (88.80%). The majority race/ethnicity of students attending public schools in 21771 is White(79.78%).

A: The median household income in 21771 is $137,500 (2021) and the average adjusted income is $380,250 (2021).
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