Maryland Citizen Voting-age Population By County in 2020 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2020, the citizen voting-age population for Maryland was 4,313,170 and represented 71.44% of the total Maryland population.

Among all Maryland counties, Montgomery had the highest citizen voting-age population (673.69K), followed by Baltimore (609.93K), and Prince George's (601.15K).

In terms of percentages, Allegany had the highest percentage of its population being citizens of voting-age (81.78%), followed by Somerset (81.30%), and Kent (81.19%).

The chart and table below shows the citizen voting-age population of each county and the percentage of each county's population that were citizens of voting-age.

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

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Maryland Citizen Voting-age Population By County in 2020
Maryland Citizen Voting-age Population By County in 2020
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County Citizen Voting-age Population % of County Population
Montgomery 673690 64.30
Baltimore 609935 73.65
Prince George's 601145 66.02
Baltimore city 453525 75.30
Anne Arundel 427900 74.36
Howard 221080 68.57
Harford 194010 76.46
Frederick 185550 72.49
Carroll 128995 76.68
Charles 119290 73.89
Washington 114505 76.05
St. Mary's 83230 73.54
Cecil 77925 75.74
Wicomico 76125 73.75
Calvert 69955 75.96
Allegany 58065 81.78
Worcester 41615 80.08
Queen Anne's 38490 76.73
Talbot 29025 78.27
Dorchester 24550 76.73
Caroline 24230 72.85
Garrett 23640 81.08
Somerset 20895 81.30
Kent 15795 81.19