Ranking of Kentucky Counties By Population Aged 25 years and above with an Educational attainment of High School Graduate or Equivalent in 2021 (ACS-5Yrs)
Updated on September 3, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the population of Kentucky (aged 25 years and above) who had an educational attainment of High School Graduate or Equivalent was 1,000,507. Among all Kentucky counties, Jefferson County had the highest population (aged 25 years and above) with an educational attainment of High School Graduate or Equivalent (142,247), followed by Fayette County (39,476), and Kenton County (31,465).
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 Population (Aged 25yrs+) with an Educational Attainment of High School Graduate or Equivalent in 2021
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| Rank | County | Number of People |
|---|---|---|
| 1 | Jefferson County | 142247 |
| 2 | Fayette County | 39476 |
| 3 | Kenton County | 31465 |
| 4 | Boone County | 25378 |
| 5 | Bullitt County | 23540 |
| 6 | Daviess County | 23268 |
| 7 | Hardin County | 22325 |
| 8 | Warren County | 21991 |
| 9 | Campbell County | 17108 |
| 10 | Laurel County | 16940 |
| 11 | Pike County | 16537 |
| 12 | Pulaski County | 15602 |
| 13 | Madison County | 15409 |
| 14 | McCracken County | 15235 |
| 15 | Barren County | 13133 |
| 16 | Christian County | 12978 |
| 17 | Hopkins County | 12640 |
| 18 | Henderson County | 11906 |
| 19 | Nelson County | 11599 |
| 20 | Boyd County | 11307 |
| 21 | Jessamine County | 11166 |
| 22 | Scott County | 11159 |
| 23 | Franklin County | 10924 |
| 24 | Graves County | 10073 |
| 25 | Floyd County | 9876 |
| 26 | Muhlenberg County | 9426 |
| 27 | Clark County | 9425 |
| 28 | Shelby County | 9421 |
| 29 | Greenup County | 9361 |
| 30 | Whitley County | 9072 |
| 31 | Oldham County | 8888 |
| 32 | Marshall County | 8201 |
| 33 | Meade County | 8187 |
| 34 | Logan County | 8174 |
| 35 | Grayson County | 8145 |
| 36 | Knox County | 7944 |
| 37 | Montgomery County | 7926 |
| 38 | Lincoln County | 7378 |
| 39 | Carter County | 7312 |
| 40 | Calloway County | 7286 |
| 41 | Bell County | 7270 |
| 42 | Grant County | 7209 |
| 43 | Boyle County | 7175 |
| 44 | Harlan County | 6741 |
| 45 | Perry County | 6460 |
| 46 | Ohio County | 6444 |
| 47 | Johnson County | 6345 |
| 48 | Breckinridge County | 6224 |
| 49 | Taylor County | 6220 |
| 50 | Allen County | 5909 |
| 51 | Marion County | 5879 |
| 52 | Simpson County | 5773 |
| 53 | Clay County | 5566 |
| 54 | Anderson County | 5565 |
| 55 | Letcher County | 5537 |
| 56 | Hart County | 5507 |
| 57 | Wayne County | 5467 |
| 58 | Mercer County | 5452 |
| 59 | Harrison County | 5260 |
| 60 | Spencer County | 5136 |
| 61 | Rockcastle County | 5006 |
| 62 | Adair County | 4962 |
| 63 | Rowan County | 4949 |
| 64 | Woodford County | 4947 |
| 65 | McCreary County | 4903 |
| 66 | Lawrence County | 4827 |
| 67 | Bourbon County | 4787 |
| 68 | Garrard County | 4669 |
| 69 | Russell County | 4630 |
| 70 | Henry County | 4472 |
| 71 | Casey County | 4455 |
| 72 | Estill County | 4329 |
| 73 | Pendleton County | 4320 |
| 74 | Union County | 4243 |
| 75 | Webster County | 4194 |
| 76 | Fleming County | 4094 |
| 77 | Morgan County | 4052 |
| 78 | Edmonson County | 4047 |
| 79 | Jackson County | 4043 |
| 80 | Lewis County | 4012 |
| 81 | Butler County | 3985 |
| 82 | Powell County | 3852 |
| 83 | Breathitt County | 3752 |
| 84 | Bath County | 3695 |
| 85 | Mason County | 3662 |
| 86 | Caldwell County | 3630 |
| 87 | Larue County | 3550 |
| 88 | Washington County | 3429 |
| 89 | Leslie County | 3395 |
| 90 | Green County | 3267 |
| 91 | Trigg County | 3244 |
| 92 | Monroe County | 3219 |
| 93 | Owen County | 3218 |
| 94 | Todd County | 3163 |
| 95 | Magoffin County | 3128 |
| 96 | Lyon County | 3074 |
| 97 | Metcalfe County | 3068 |
| 98 | Carroll County | 3010 |
| 99 | Knott County | 2975 |
| 100 | Martin County | 2968 |
| 101 | Gallatin County | 2885 |
| 102 | Crittenden County | 2799 |
| 103 | Trimble County | 2757 |
| 104 | Livingston County | 2742 |
| 105 | Bracken County | 2707 |
| 106 | Hancock County | 2610 |
| 107 | Clinton County | 2572 |
| 108 | Elliott County | 2545 |
| 109 | McLean County | 2494 |
| 110 | Nicholas County | 2394 |
| 111 | Ballard County | 2178 |
| 112 | Lee County | 2176 |
| 113 | Cumberland County | 1991 |
| 114 | Menifee County | 1867 |
| 115 | Fulton County | 1775 |
| 116 | Carlisle County | 1582 |
| 117 | Wolfe County | 1520 |
| 118 | Hickman County | 1264 |
| 119 | Owsley County | 1236 |
| 120 | Robertson County | 621 |