Ranking of South Dakota Cities and Places By Percentage of Population with Irish Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 87.24K people in South Dakota with Irish ancestry (9.89% of South Dakota population). Among all South Dakota cities and places with a population of at least 10K, Vermillion city had the highest percentage of its population with Irish ancestry (17.41%), followed by Spearfish city (12.04%), and Rapid City city (11.88%).

The chart and table below shows the top 10 cities with high percentage of its population having Irish ancestry.

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

Data Source: US Census Bureau.
Ranking of South Dakota Cities and Places By Percentage of Population with Irish Ancestry in 2021
Vermillion city
Spearfish city
Rapid City city
Pierre city
Brandon city
Box Elder city
Sioux Falls city
Yankton city
Watertown city
Mitchell city
Ranking of South Dakota Cities and Places By Percentage of Population with Irish Ancestry in 2021
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Rank Ciy or Place Percentage of Pop. (%)
1 Vermillion city 17.41
2 Spearfish city 12.04
3 Rapid City city 11.88
4 Pierre city 11.70
5 Brandon city 11.17
6 Box Elder city 10.90
6 Sioux Falls city 10.90
7 Yankton city 10.79
8 Watertown city 10.64
9 Mitchell city 10.26
10 Brookings city 10.02
11 Huron city 8.97
12 Aberdeen city 7.05