Maryland Population By County in 2015

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2015, the population of Maryland was 5,988,528. Among all Maryland counties, Montgomery had the highest population (1,033,370), followed by Prince George's (906,754), and Baltimore (827,796). Kent was the least populated county (19,745).

Hover over or click on the counties in the map below to see the populations. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.

You can see similar information for other states and by state for the United States.

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Maryland Population By County in 2015
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Maryland Population By County in 2015
County
Population
% of State Population
Montgomery 1,033,370 17.26
Prince George's 906,754 15.14
Baltimore 827,796 13.82
Baltimore city 622,831 10.40
Anne Arundel 563,133 9.40
Howard 311,417 5.20
Harford 249,690 4.17
Frederick 245,145 4.09
Carroll 167,201 2.79
Charles 155,775 2.60
Washington 149,160 2.49
St. Mary's 111,092 1.86
Cecil 102,453 1.71
Wicomico 101,820 1.70
Calvert 90,542 1.51
Allegany 72,501 1.21
Worcester 51,472 0.86
Queen Anne's 49,012 0.82
Talbot 37,431 0.63
Caroline 32,601 0.54
Dorchester 32,431 0.54
Garrett 29,451 0.49
Somerset 25,705 0.43
Kent 19,745 0.33
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