Ranking of Nebraska 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 Nebraska (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 8.28%. Among all Nebraska counties, Colfax County had the highest percentage of its population (aged 25 years and above) with an educational attainment of Less than High School Diploma (26.57%), followed by Dawson County (22.28%), and Dakota County (22.07%).
The chart below shows the top 10 Nebraska counties, and the table below shows the ranking of all Nebraska 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: Nebraska ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates.
Ranking of Nebraska 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 | Colfax County | 26.57 |
| 2 | Dawson County | 22.28 |
| 3 | Dakota County | 22.07 |
| 4 | Saline County | 19.81 |
| 5 | Dixon County | 15.58 |
| 6 | Hall County | 15.10 |
| 7 | Pawnee County | 14.77 |
| 8 | Chase County | 12.10 |
| 9 | Kimball County | 12.06 |
| 10 | Johnson County | 11.52 |
| 11 | Platte County | 11.43 |
| 12 | Dodge County | 10.76 |
| 13 | Scotts Bluff County | 10.64 |
| 14 | Cuming County | 10.63 |
| 15 | Perkins County | 10.53 |
| 16 | Keith County | 10.40 |
| 17 | Sheridan County | 10.14 |
| 18 | Furnas County | 9.59 |
| 19 | Deuel County | 9.54 |
| 20 | Box Butte County | 9.47 |
| 20 | Thurston County | 9.47 |
| 21 | Dundy County | 9.42 |
| 22 | Morrill County | 9.37 |
| 23 | Nemaha County | 9.15 |
| 24 | Gage County | 9.10 |
| 25 | Burt County | 8.94 |
| 26 | Douglas County | 8.81 |
| 27 | Polk County | 8.72 |
| 28 | Adams County | 8.43 |
| 29 | Sherman County | 8.37 |
| 30 | Jefferson County | 8.31 |
| 31 | Greeley County | 8.27 |
| 32 | Blaine County | 7.96 |
| 33 | Phelps County | 7.95 |
| 34 | Madison County | 7.91 |
| 35 | Nuckolls County | 7.86 |
| 36 | Buffalo County | 7.70 |
| 36 | Franklin County | 7.70 |
| 37 | Antelope County | 7.68 |
| 38 | Thomas County | 7.64 |
| 39 | Knox County | 7.62 |
| 40 | Red Willow County | 7.34 |
| 41 | Banner County | 7.25 |
| 42 | Hooker County | 7.19 |
| 43 | Harlan County | 7.14 |
| 44 | Grant County | 7.07 |
| 45 | Clay County | 7.03 |
| 46 | Otoe County | 7.02 |
| 47 | McPherson County | 6.97 |
| 48 | Nance County | 6.95 |
| 49 | Merrick County | 6.85 |
| 50 | Lancaster County | 6.67 |
| 51 | Hayes County | 6.58 |
| 52 | Thayer County | 6.48 |
| 53 | Richardson County | 6.44 |
| 54 | Holt County | 6.40 |
| 55 | Brown County | 6.26 |
| 55 | Cheyenne County | 6.26 |
| 56 | Butler County | 6.25 |
| 57 | Garden County | 6.18 |
| 58 | Valley County | 6.11 |
| 59 | Lincoln County | 6.09 |
| 60 | Gosper County | 6.00 |
| 61 | Frontier County | 5.80 |
| 62 | Cedar County | 5.71 |
| 63 | Cass County | 5.69 |
| 63 | York County | 5.69 |
| 64 | Webster County | 5.65 |
| 65 | Fillmore County | 5.63 |
| 65 | Seward County | 5.63 |
| 66 | Pierce County | 5.62 |
| 67 | Custer County | 5.57 |
| 68 | Saunders County | 5.32 |
| 69 | Sioux County | 5.23 |
| 70 | Stanton County | 5.21 |
| 71 | Boone County | 5.18 |
| 71 | Kearney County | 5.18 |
| 72 | Dawes County | 5.09 |
| 73 | Wheeler County | 5.03 |
| 74 | Hitchcock County | 5.01 |
| 75 | Boyd County | 4.93 |
| 76 | Howard County | 4.69 |
| 76 | Keya Paha County | 4.69 |
| 77 | Sarpy County | 4.49 |
| 78 | Arthur County | 4.38 |
| 78 | Washington County | 4.38 |
| 79 | Rock County | 4.10 |
| 80 | Logan County | 4.07 |
| 81 | Wayne County | 3.82 |
| 82 | Hamilton County | 3.29 |
| 83 | Garfield County | 3.26 |
| 84 | Cherry County | 2.73 |
| 85 | Loup County | 1.68 |