Ranking of Indiana Counties By Percentage of Population Aged 25 years and above with an Educational attainment of Less than High School Diploma in 2021 (ACS-5Yrs)
Updated on September 3, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the percentage of the population of Indiana (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 10.23%. Among all Indiana counties, LaGrange County had the highest percentage of its population (aged 25 years and above) with an educational attainment of Less than High School Diploma (40.41%), followed by Daviess County (23.13%), and Scott County (19.03%).
The chart below shows the top 10 Indiana counties, and the table below shows the ranking of all Indiana counties.
You can see similar information for other educational attainments.
You can also see similar information for other states and for the United States.
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Related Topics: Indiana ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates.
Ranking of Indiana Counties By Percentage of Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
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| Rank | County | Percentage of Population (Aged 25yrs+) (%) |
|---|---|---|
| 1 | LaGrange County | 40.41 |
| 2 | Daviess County | 23.13 |
| 3 | Scott County | 19.03 |
| 4 | Elkhart County | 18.07 |
| 5 | Noble County | 17.16 |
| 6 | Crawford County | 17.14 |
| 7 | Cass County | 15.32 |
| 8 | Orange County | 15.12 |
| 8 | Parke County | 15.12 |
| 9 | Fayette County | 15.06 |
| 10 | Switzerland County | 15.05 |
| 11 | Marshall County | 14.47 |
| 12 | Starke County | 14.43 |
| 13 | Owen County | 14.14 |
| 14 | Adams County | 13.74 |
| 15 | Miami County | 13.61 |
| 16 | Washington County | 13.33 |
| 17 | Clinton County | 13.18 |
| 18 | Marion County | 13.11 |
| 19 | Pulaski County | 12.80 |
| 20 | Martin County | 12.66 |
| 21 | Sullivan County | 12.57 |
| 22 | Fulton County | 12.47 |
| 23 | Kosciusko County | 12.27 |
| 24 | Newton County | 12.18 |
| 25 | Fountain County | 12.15 |
| 26 | Jay County | 11.97 |
| 27 | Wayne County | 11.84 |
| 28 | Union County | 11.78 |
| 29 | Pike County | 11.77 |
| 30 | Franklin County | 11.71 |
| 30 | Grant County | 11.71 |
| 31 | Greene County | 11.64 |
| 32 | Benton County | 11.58 |
| 33 | Morgan County | 11.52 |
| 34 | Knox County | 11.32 |
| 35 | Lawrence County | 11.20 |
| 36 | Jennings County | 11.09 |
| 37 | Randolph County | 10.94 |
| 38 | Shelby County | 10.93 |
| 39 | Carroll County | 10.91 |
| 40 | Jackson County | 10.86 |
| 40 | Putnam County | 10.86 |
| 40 | White County | 10.86 |
| 41 | Ohio County | 10.68 |
| 42 | LaPorte County | 10.62 |
| 43 | Jefferson County | 10.47 |
| 44 | Vigo County | 10.36 |
| 45 | Rush County | 10.27 |
| 46 | Madison County | 10.24 |
| 47 | Lake County | 10.20 |
| 48 | Wabash County | 10.14 |
| 49 | Dubois County | 10.00 |
| 50 | Allen County | 9.94 |
| 51 | Ripley County | 9.85 |
| 52 | Harrison County | 9.76 |
| 53 | Delaware County | 9.53 |
| 54 | Montgomery County | 9.47 |
| 55 | Tipton County | 9.45 |
| 56 | Dearborn County | 9.24 |
| 57 | Perry County | 9.21 |
| 58 | Henry County | 9.20 |
| 59 | Blackford County | 9.12 |
| 60 | Howard County | 9.10 |
| 61 | Clark County | 9.09 |
| 62 | DeKalb County | 9.05 |
| 62 | Vanderburgh County | 9.05 |
| 63 | St. Joseph County | 8.99 |
| 64 | Clay County | 8.81 |
| 65 | Floyd County | 8.73 |
| 66 | Spencer County | 8.59 |
| 67 | Vermillion County | 8.57 |
| 68 | Jasper County | 8.56 |
| 69 | Gibson County | 8.55 |
| 70 | Bartholomew County | 8.40 |
| 71 | Decatur County | 8.22 |
| 72 | Whitley County | 7.86 |
| 73 | Steuben County | 7.63 |
| 74 | Tippecanoe County | 7.42 |
| 75 | Posey County | 7.32 |
| 76 | Johnson County | 7.23 |
| 77 | Huntington County | 7.17 |
| 78 | Brown County | 6.94 |
| 79 | Wells County | 6.80 |
| 80 | Hancock County | 6.68 |
| 81 | Warren County | 6.49 |
| 82 | Monroe County | 6.15 |
| 83 | Porter County | 5.94 |
| 84 | Boone County | 5.59 |
| 85 | Warrick County | 5.45 |
| 86 | Hendricks County | 4.88 |
| 87 | Hamilton County | 2.76 |