Population of Counties in Maryland (2018)

Name 2018 Population Growth Since 2010
Montgomery County1,058,8108.47%
Prince George's County912,7565.44%
Baltimore County832,4683.23%
Baltimore city611,648-1.51%
Anne Arundel County573,2356.31%
Howard County321,11311.26%
Harford County252,1602.83%
Frederick County252,0227.62%
Carroll County167,7810.35%
Charles County159,7008.53%
Washington County150,5781.93%
St. Mary's County112,6676.53%
Wicomico County102,9234.01%
Cecil County102,7461.56%
Calvert County91,5022.83%
Allegany County71,615-4.48%
Worcester County51,6900.38%
Queen Anne's County49,7704.10%
Talbot County37,103-2.05%
Caroline County33,1930.41%
Dorchester County32,162-1.59%
Garrett County29,233-2.98%
Somerset County25,918-2.06%
Kent County19,384-4.07%