Maryland 2020 Census Total Population By County

Updated on January 23, 2023.

The total population of Maryland from the 2020 Census was 6,177,224, based on data from the US Census Bureau.

Montgomery County was the most populated county (1,062,061), followed by Prince George's County (967,201), and then Baltimore County (854,535). On the other hand, the 3 counties that were least populated include: Kent County (19,198), Somerset County (24,620), and Garrett County (28,806).

You can also see this information for other states and also for the US by state.

Hover over or click on the counties to see the number and percentage of Maryland population that lives in each county. 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 also see the population by county for the different racial groups as well as the different ethnicities in Maryland.

Maryland 2020 Census Total Population By County
Maryland 2020 Census Total Population By County
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County Population % of Maryland Pop.
Allegany 68106 1.10
Anne Arundel 588261 9.52
Baltimore 854535 13.83
Calvert 92783 1.50
Caroline 33293 0.54
Carroll 172891 2.80
Cecil 103725 1.68
Charles 166617 2.70
Dorchester 32531 0.53
Frederick 271717 4.40
Garrett 28806 0.47
Harford 260924 4.22
Howard 332317 5.38
Kent 19198 0.31
Montgomery 1062061 17.19
Prince George's 967201 15.66
Queen Anne's 49874 0.81
St. Mary's 113777 1.84
Somerset 24620 0.40
Talbot 37526 0.61
Washington 154705 2.50
Wicomico 103588 1.68
Worcester 52460 0.85
Baltimore city 585708 9.48