There are 12 zip codes in Calvert County, Maryland. The most populated is 20657, located in Lusby. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
20657Lusby21,054
20639Huntingtown15,058
20678Prince Frederick12,874
20732Chesapeake Beach10,676
20736Owings9,274
20754Dunkirk7,344
20685Saint Leonard6,750
20676Port Republic2,897
20689Sunderland1,884
20688Solomons1,170
20629Dowell1,072
20615Broomes Island524

Calvert County, Maryland Zip Codes by Population (2024)