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
Population
City
2155013,640Oakland
215363,945Grantsville
215623,248Westernport
215612,517Swanton
215392,095Lonaconing
215202,056Accident
215312,014Friendsville
215411,682McHenry
215211,426Barton
21538571Kitzmiller
21523133Bloomington

Zip Codes in Garrett County, Maryland by Population (2024)