Ranking of Indiana Counties 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 701.02K people in Indiana with Irish ancestry (10.38% of Indiana population). Among all Indiana counties, Newton County had the highest percentage of its population with Irish ancestry (18.84%), followed by Perry County (15.40%), and Blackford County (14.94%).
The chart and table below shows the top 10 counties with high percentage of its population having Irish ancestry.
You can see similar information for other states and for other ancestry groups in Indiana.
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Related Topics: Indiana ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Indiana Counties By Percentage of Population with Irish Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Newton County | 18.84 |
| 2 | Perry County | 15.40 |
| 3 | Blackford County | 14.94 |
| 4 | Porter County | 14.88 |
| 5 | Clark County | 14.02 |
| 5 | Warrick County | 14.02 |
| 6 | Benton County | 13.75 |
| 7 | Montgomery County | 13.73 |
| 8 | LaPorte County | 13.72 |
| 9 | Dearborn County | 13.53 |
| 10 | Floyd County | 13.31 |
| 11 | Fountain County | 12.67 |
| 12 | Pulaski County | 12.50 |
| 13 | Starke County | 12.48 |
| 14 | Jasper County | 12.47 |
| 15 | Huntington County | 12.46 |
| 15 | Rush County | 12.46 |
| 16 | St. Joseph County | 12.20 |
| 17 | Hamilton County | 12.18 |
| 18 | Jennings County | 12.12 |
| 18 | Martin County | 12.12 |
| 19 | Hancock County | 12.07 |
| 20 | Wabash County | 12.01 |
| 21 | Owen County | 12.00 |
| 22 | Wayne County | 11.87 |
| 23 | Lawrence County | 11.73 |
| 24 | Crawford County | 11.64 |
| 25 | Delaware County | 11.61 |
| 26 | Gibson County | 11.50 |
| 27 | Monroe County | 11.46 |
| 28 | Ohio County | 11.45 |
| 29 | Pike County | 11.23 |
| 30 | Vigo County | 11.17 |
| 31 | Vermillion County | 11.15 |
| 32 | White County | 11.13 |
| 33 | Kosciusko County | 11.11 |
| 34 | Sullivan County | 11.09 |
| 35 | Jefferson County | 10.99 |
| 35 | Randolph County | 10.99 |
| 36 | Vanderburgh County | 10.94 |
| 37 | Posey County | 10.91 |
| 38 | Henry County | 10.81 |
| 39 | Steuben County | 10.80 |
| 40 | Fayette County | 10.70 |
| 41 | Switzerland County | 10.69 |
| 42 | Tipton County | 10.58 |
| 43 | Greene County | 10.48 |
| 44 | Decatur County | 10.46 |
| 45 | Johnson County | 10.35 |
| 46 | Lake County | 10.31 |
| 47 | Brown County | 10.28 |
| 48 | Orange County | 10.16 |
| 49 | Morgan County | 10.14 |
| 50 | Miami County | 10.02 |
| 51 | Hendricks County | 10.01 |
| 52 | Carroll County | 10.00 |
| 53 | Scott County | 9.99 |
| 54 | Ripley County | 9.94 |
| 55 | Tippecanoe County | 9.93 |
| 56 | Boone County | 9.86 |
| 57 | Dubois County | 9.78 |
| 58 | Harrison County | 9.76 |
| 59 | Washington County | 9.73 |
| 60 | Daviess County | 9.71 |
| 61 | Franklin County | 9.66 |
| 62 | Allen County | 9.55 |
| 63 | Madison County | 9.48 |
| 64 | Parke County | 9.46 |
| 65 | Spencer County | 9.45 |
| 66 | DeKalb County | 9.19 |
| 67 | Knox County | 9.02 |
| 68 | Fulton County | 8.90 |
| 69 | Bartholomew County | 8.87 |
| 70 | Jackson County | 8.82 |
| 71 | Cass County | 8.71 |
| 72 | Union County | 8.69 |
| 73 | Grant County | 8.65 |
| 73 | Howard County | 8.65 |
| 74 | Whitley County | 8.58 |
| 75 | Warren County | 8.51 |
| 76 | Clay County | 8.49 |
| 77 | Shelby County | 8.44 |
| 78 | Marion County | 8.43 |
| 79 | Jay County | 8.30 |
| 80 | Noble County | 8.17 |
| 81 | Marshall County | 7.98 |
| 82 | Putnam County | 7.75 |
| 83 | Elkhart County | 7.47 |
| 84 | Wells County | 6.57 |
| 85 | Clinton County | 6.54 |
| 86 | Adams County | 6.25 |
| 87 | LaGrange County | 4.39 |
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