Ranking of Maryland Counties By Percentage of Population with Celtic Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 917 people in Maryland with Celtic ancestry (0.02% of Maryland population). Among all Maryland counties, Somerset County had the highest percentage of its population with Celtic ancestry (0.09%), followed by Caroline County (0.06%), and Carroll County (0.06%).

The chart and table below shows the top 10 counties with high percentage of its population having Celtic 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 Percentage of Population with Celtic Ancestry in 2021
Somerset County
Caroline County
Carroll County
Cecil County
Washington County
Allegany County
Dorchester County
St. Mary's County
Calvert County
Frederick County
Ranking of Maryland Counties By Percentage of Population with Celtic Ancestry in 2021
0 of 0
Rank County Percentage of Pop. (%)
1 Somerset County 0.09
2 Caroline County 0.06
2 Carroll County 0.06
3 Cecil County 0.04
3 Washington County 0.04
4 Allegany County 0.03
4 Dorchester County 0.03
4 St. Mary's County 0.03
5 Calvert County 0.02
5 Frederick County 0.02
5 Harford County 0.02
5 Montgomery County 0.02
5 Wicomico County 0.02
6 Anne Arundel County 0.01
6 Charles County 0.01
6 Garrett County 0.01
6 Howard County 0.01
6 Prince George's County 0.01
6 Baltimore city 0.01
7 Baltimore County 0.004