Maryland Citizen Voting-age Population By County in 2018 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2018, the citizen voting-age population for Maryland was 4,262,390 and represented 71.00% of the total Maryland population.

Among all Maryland counties, Montgomery had the highest citizen voting-age population (657.93K), followed by Baltimore (607.07K), and Prince George's (597.51K).

In terms of percentages, Allegany had the highest percentage of its population being citizens of voting-age (81.35%), followed by Kent (80.81%), and Worcester (80.67%).

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 2018
Maryland Citizen Voting-age Population By County in 2018
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County Citizen Voting-age Population % of County Population
Montgomery 657925 63.25
Baltimore 607065 73.35
Prince George's 597505 65.94
Baltimore city 458860 74.65
Anne Arundel 421115 74.18
Howard 214225 67.94
Harford 190180 75.76
Frederick 178355 71.78
Carroll 128260 76.56
Charles 116035 73.59
Washington 113505 75.77
St. Mary's 81860 73.40
Cecil 77520 75.62
Wicomico 75310 73.71
Calvert 68745 75.48
Allegany 58550 81.35
Worcester 41595 80.67
Queen Anne's 37615 76.21
Talbot 29085 78.16
Dorchester 24765 76.77
Caroline 24080 73.25
Garrett 23670 80.58
Somerset 20730 80.55
Kent 15835 80.81