Ranking of Maryland Counties By 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. Among all Maryland counties, Baltimore County had the highest population with Unclassified ancestry (178.19K), followed by Prince George's County (162.54K), and Montgomery County (160.76K).
The chart and table below shows the top 10 counties with high number of people with 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 Population with Unclassified Ancestry in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | Baltimore County | 178185 |
| 2 | Prince George's County | 162543 |
| 3 | Montgomery County | 160759 |
| 4 | Anne Arundel County | 149313 |
| 5 | Baltimore city | 116259 |
| 6 | Frederick County | 61087 |
| 7 | Harford County | 55325 |
| 8 | Howard County | 53544 |
| 9 | Washington County | 47954 |
| 10 | Charles County | 40882 |
| 11 | Carroll County | 35327 |
| 12 | St. Mary's County | 29712 |
| 13 | Calvert County | 25962 |
| 14 | Cecil County | 25197 |
| 15 | Wicomico County | 21770 |
| 16 | Allegany County | 20350 |
| 17 | Queen Anne's County | 12936 |
| 18 | Worcester County | 12896 |
| 19 | Garrett County | 9347 |
| 20 | Caroline County | 8312 |
| 21 | Dorchester County | 7375 |
| 22 | Talbot County | 7275 |
| 23 | Kent County | 4610 |
| 24 | Somerset County | 4419 |