There are 11 zip codes in Garrett County, Maryland. The most populated is 21550, located in Oakland. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
21550Oakland13,640
21536Grantsville3,945
21562Westernport3,248
21561Swanton2,517
21539Lonaconing2,095
21520Accident2,056
21531Friendsville2,014
21541McHenry1,682
21521Barton1,426
21538Kitzmiller571
21523Bloomington133

Garrett County, Maryland Zip Codes by Population (2024)