Ranking of Maryland Counties By Percentage of Population with Unclassified Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 1.25M people in Maryland with Unclassified ancestry (20.35% of Maryland population). Among all Maryland counties, Garrett County had the highest percentage of its population with Unclassified ancestry (32.28%), followed by Washington County (31.15%), and Allegany County (29.63%).
The chart and table below shows the top 10 counties with high percentage of its population having Unclassified ancestry.
You can see similar information for other states and for other ancestry groups in Maryland.
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Related Topics: Maryland ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Maryland Counties By Percentage of Population with Unclassified Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Garrett County | 32.28 |
| 2 | Washington County | 31.15 |
| 3 | Allegany County | 29.63 |
| 4 | Calvert County | 28.06 |
| 5 | St. Mary's County | 26.25 |
| 6 | Queen Anne's County | 26.03 |
| 7 | Anne Arundel County | 25.56 |
| 8 | Caroline County | 25.01 |
| 9 | Charles County | 24.75 |
| 10 | Worcester County | 24.65 |
| 11 | Cecil County | 24.38 |
| 12 | Kent County | 23.84 |
| 13 | Frederick County | 22.84 |
| 14 | Dorchester County | 22.70 |
| 15 | Harford County | 21.35 |
| 16 | Wicomico County | 21.09 |
| 17 | Baltimore County | 20.95 |
| 18 | Carroll County | 20.52 |
| 19 | Baltimore city | 19.63 |
| 20 | Talbot County | 19.40 |
| 21 | Somerset County | 17.79 |
| 22 | Prince George's County | 16.97 |
| 23 | Howard County | 16.26 |
| 24 | Montgomery County | 15.21 |
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