Ranking of Maryland Counties By Population with American Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 276.23K people in Maryland with American ancestry. Among all Maryland counties, Baltimore County had the highest population with American ancestry (36.70K), followed by Montgomery County (32.58K), and Prince George's County (28.82K).

The chart and table below shows the top 10 counties with high number of people with American ancestry.

You can see similar information for other states and for other ancestry groups in Maryland.

Data Source: US Census Bureau.
Ranking of Maryland Counties By Population with American Ancestry in 2021
Baltimore County
Montgomery County
Prince George's County
Anne Arundel County
Carroll County
Baltimore city
Harford County
Frederick County
Howard County
Washington County
Ranking of Maryland Counties By Population with American Ancestry in 2021
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Rank County Population
1 Baltimore County 36696
2 Montgomery County 32579
3 Prince George's County 28817
4 Anne Arundel County 26567
5 Carroll County 20937
6 Baltimore city 16614
7 Harford County 14620
8 Frederick County 13912
9 Howard County 11529
10 Washington County 9065
11 St. Mary's County 7907
12 Wicomico County 7727
13 Charles County 6827
14 Cecil County 6344
15 Somerset County 6127
16 Calvert County 5559
17 Dorchester County 4837
18 Allegany County 4479
19 Caroline County 3702
20 Worcester County 3416
21 Queen Anne's County 2678
22 Talbot County 2337
23 Garrett County 1545
24 Kent County 1407