Maryland Population By County in 2012

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2012, the population of Maryland was 5,888,375. Among all Maryland counties, Montgomery had the highest population (1,005,310), followed by Prince George's (882,787), and Baltimore (818,218). Kent was the least populated county (19,987).

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 2012
Maryland Population By County in 2012
County
Population
% of State Population
Montgomery 1,005,310 17.07
Prince George's 882,787 14.99
Baltimore 818,218 13.90
Baltimore city 623,035 10.58
Anne Arundel 550,476 9.35
Howard 299,223 5.08
Harford 248,609 4.22
Frederick 239,705 4.07
Carroll 167,085 2.84
Charles 150,700 2.56
Washington 149,090 2.53
St. Mary's 108,847 1.85
Cecil 101,780 1.73
Wicomico 100,593 1.71
Calvert 89,746 1.52
Allegany 73,966 1.26
Worcester 51,578 0.88
Queen Anne's 48,506 0.82
Talbot 37,995 0.65
Caroline 32,636 0.55
Dorchester 32,483 0.55
Garrett 29,976 0.51
Somerset 26,044 0.44
Kent 19,987 0.34
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