Ranking of Kentucky 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 Kentucky (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 12.35%. Among all Kentucky counties, Wolfe County had the highest percentage of its population (aged 25 years and above) with an educational attainment of Less than High School Diploma (34.09%), followed by Clay County (31.66%), and Owsley County (31.46%).
The chart below shows the top 10 Kentucky counties, and the table below shows the ranking of all Kentucky 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: Kentucky ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates.
Ranking of Kentucky 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 | Wolfe County | 34.09 |
| 2 | Clay County | 31.66 |
| 3 | Owsley County | 31.46 |
| 4 | Knott County | 29.59 |
| 5 | Jackson County | 28.66 |
| 6 | Magoffin County | 27.88 |
| 7 | Lee County | 27.08 |
| 8 | Martin County | 26.28 |
| 9 | Estill County | 25.73 |
| 10 | Casey County | 25.55 |
| 11 | Harlan County | 25.15 |
| 12 | Elliott County | 24.88 |
| 13 | Bell County | 24.68 |
| 14 | Knox County | 23.97 |
| 15 | Lawrence County | 23.58 |
| 16 | Menifee County | 23.38 |
| 17 | Morgan County | 23.09 |
| 18 | Letcher County | 23.04 |
| 19 | Floyd County | 22.86 |
| 20 | Lewis County | 22.84 |
| 21 | Wayne County | 22.81 |
| 22 | Breathitt County | 22.54 |
| 23 | Perry County | 22.16 |
| 24 | McCreary County | 22.03 |
| 25 | Hart County | 22.02 |
| 26 | Clinton County | 21.90 |
| 27 | Pike County | 21.12 |
| 28 | Todd County | 20.84 |
| 29 | Carter County | 20.50 |
| 30 | Cumberland County | 20.36 |
| 31 | Fulton County | 20.00 |
| 32 | Rockcastle County | 19.57 |
| 33 | Monroe County | 19.27 |
| 34 | Carroll County | 19.25 |
| 35 | Green County | 19.19 |
| 35 | Larue County | 19.19 |
| 36 | Butler County | 19.17 |
| 37 | Edmonson County | 19.10 |
| 38 | Nicholas County | 18.91 |
| 39 | Fleming County | 18.69 |
| 39 | Ohio County | 18.69 |
| 40 | Metcalfe County | 18.47 |
| 41 | Russell County | 18.13 |
| 42 | Powell County | 17.99 |
| 43 | Bath County | 17.98 |
| 44 | Lincoln County | 17.65 |
| 45 | Laurel County | 17.51 |
| 46 | Whitley County | 17.50 |
| 47 | Owen County | 17.14 |
| 48 | Johnson County | 16.94 |
| 49 | Grayson County | 16.77 |
| 50 | Muhlenberg County | 16.65 |
| 51 | Pendleton County | 16.59 |
| 52 | Pulaski County | 16.58 |
| 53 | Leslie County | 16.46 |
| 54 | Trimble County | 16.15 |
| 55 | Barren County | 15.76 |
| 56 | Henry County | 15.71 |
| 57 | Robertson County | 15.30 |
| 58 | Gallatin County | 15.02 |
| 59 | Harrison County | 14.98 |
| 60 | Adair County | 14.81 |
| 61 | Webster County | 14.80 |
| 62 | Marion County | 14.73 |
| 63 | Carlisle County | 14.70 |
| 64 | Montgomery County | 14.59 |
| 65 | Garrard County | 14.53 |
| 66 | Hancock County | 14.46 |
| 67 | Crittenden County | 14.24 |
| 68 | Bourbon County | 14.21 |
| 69 | Allen County | 14.08 |
| 70 | Breckinridge County | 13.91 |
| 71 | Mason County | 13.90 |
| 72 | Christian County | 13.82 |
| 73 | Livingston County | 13.60 |
| 74 | Washington County | 13.33 |
| 75 | Rowan County | 13.10 |
| 76 | Caldwell County | 13.08 |
| 77 | Shelby County | 12.92 |
| 78 | Taylor County | 12.88 |
| 79 | Logan County | 12.48 |
| 80 | Hopkins County | 12.31 |
| 81 | Warren County | 12.16 |
| 82 | Mercer County | 11.87 |
| 83 | Boyd County | 11.75 |
| 84 | Grant County | 11.73 |
| 85 | Henderson County | 11.52 |
| 86 | Hickman County | 11.30 |
| 87 | Bracken County | 11.13 |
| 88 | Trigg County | 11.12 |
| 89 | Ballard County | 10.79 |
| 90 | Clark County | 10.77 |
| 90 | Lyon County | 10.77 |
| 91 | Meade County | 10.70 |
| 92 | Graves County | 10.53 |
| 93 | Simpson County | 10.52 |
| 94 | Bullitt County | 10.51 |
| 95 | Madison County | 10.34 |
| 96 | Jessamine County | 10.31 |
| 97 | Boyle County | 10.30 |
| 98 | McLean County | 9.98 |
| 99 | Greenup County | 9.82 |
| 100 | Calloway County | 9.79 |
| 101 | Franklin County | 9.43 |
| 102 | Daviess County | 9.07 |
| 103 | Anderson County | 8.87 |
| 104 | Jefferson County | 8.75 |
| 105 | Union County | 8.74 |
| 106 | Kenton County | 8.45 |
| 107 | Marshall County | 8.21 |
| 108 | Woodford County | 8.16 |
| 109 | Hardin County | 7.98 |
| 110 | Nelson County | 7.88 |
| 110 | Spencer County | 7.88 |
| 111 | Fayette County | 7.64 |
| 112 | McCracken County | 7.57 |
| 113 | Campbell County | 6.99 |
| 114 | Boone County | 6.82 |
| 115 | Scott County | 6.42 |
| 116 | Oldham County | 6.07 |
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