Ranking of Kentucky Counties By Total Voting-age Population (18yrs and over) from Census 2020
Updated on August 22, 2023.
According to the data from the US 2020 Census, as at April 2020, among all the counties in Kentucky, Jefferson County had the highest voting-age population (18 years and over) (614.38K), followed by Fayette County (254.50K), and Kenton County (128.94K).
The chart below shows the top 10 counties with high voting-age population, and the table below shows the ranking of all Kentucky counties based on voting-age population.
You can also see the ranking of counties by population for other states as well as for the whole United States.
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Related Topics: Kentucky Census 2020 Topic List.
Data Source: US Census Bureau, 2020 Census.
Ranking of Kentucky Counties By Total Voting-age Population from Census 2020
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| Rank | County | Voting-age Population |
|---|---|---|
| 1 | Jefferson County | 614376 |
| 2 | Fayette County | 254496 |
| 3 | Kenton County | 128943 |
| 4 | Warren County | 102897 |
| 5 | Boone County | 100137 |
| 6 | Hardin County | 84095 |
| 7 | Daviess County | 78502 |
| 8 | Campbell County | 73538 |
| 9 | Madison County | 73345 |
| 10 | Bullitt County | 63008 |
| 11 | Christian County | 53678 |
| 12 | McCracken County | 53058 |
| 13 | Pulaski County | 50635 |
| 14 | Oldham County | 49530 |
| 15 | Laurel County | 47982 |
| 16 | Pike County | 46593 |
| 17 | Scott County | 42616 |
| 18 | Franklin County | 40657 |
| 19 | Jessamine County | 39704 |
| 20 | Boyd County | 37983 |
| 21 | Shelby County | 36361 |
| 22 | Nelson County | 35749 |
| 23 | Hopkins County | 35186 |
| 24 | Henderson County | 34500 |
| 25 | Barren County | 33802 |
| 26 | Calloway County | 30297 |
| 27 | Clark County | 28694 |
| 28 | Floyd County | 28039 |
| 29 | Greenup County | 27993 |
| 30 | Whitley County | 27787 |
| 31 | Graves County | 27768 |
| 32 | Marshall County | 25125 |
| 33 | Boyle County | 24326 |
| 34 | Muhlenberg County | 24260 |
| 35 | Knox County | 23183 |
| 36 | Meade County | 22345 |
| 37 | Perry County | 22252 |
| 38 | Montgomery County | 21511 |
| 39 | Logan County | 20978 |
| 40 | Woodford County | 20897 |
| 41 | Harlan County | 20888 |
| 42 | Carter County | 20774 |
| 43 | Grayson County | 20390 |
| 44 | Taylor County | 20215 |
| 45 | Rowan County | 19815 |
| 46 | Bell County | 18995 |
| 47 | Lincoln County | 18576 |
| 48 | Grant County | 18397 |
| 49 | Anderson County | 18268 |
| 50 | Ohio County | 17951 |
| 51 | Johnson County | 17751 |
| 52 | Mercer County | 17634 |
| 53 | Letcher County | 16952 |
| 54 | Clay County | 15983 |
| 55 | Breckinridge County | 15711 |
| 56 | Allen County | 15641 |
| 57 | Bourbon County | 15500 |
| 58 | Wayne County | 15116 |
| 59 | Simpson County | 15010 |
| 60 | Marion County | 14901 |
| 61 | Adair County | 14861 |
| 62 | Spencer County | 14798 |
| 63 | Harrison County | 14477 |
| 64 | Hart County | 14376 |
| 65 | Russell County | 13877 |
| 66 | Mason County | 13245 |
| 67 | McCreary County | 13028 |
| 68 | Garrard County | 13021 |
| 69 | Rockcastle County | 12552 |
| 70 | Lawrence County | 12527 |
| 71 | Henry County | 12102 |
| 72 | Casey County | 12064 |
| 73 | Fleming County | 11469 |
| 74 | Larue County | 11338 |
| 75 | Knott County | 11228 |
| 76 | Pendleton County | 11194 |
| 77 | Estill County | 11084 |
| 78 | Trigg County | 10975 |
| 79 | Morgan County | 10893 |
| 80 | Breathitt County | 10673 |
| 81 | Union County | 10461 |
| 82 | Powell County | 10047 |
| 83 | Jackson County | 9994 |
| 84 | Webster County | 9956 |
| 85 | Lewis County | 9948 |
| 86 | Caldwell County | 9903 |
| 87 | Bath County | 9503 |
| 87 | Edmonson County | 9503 |
| 88 | Butler County | 9377 |
| 89 | Washington County | 9264 |
| 90 | Magoffin County | 9155 |
| 91 | Martin County | 9063 |
| 92 | Todd County | 8911 |
| 93 | Monroe County | 8670 |
| 94 | Green County | 8644 |
| 95 | Owen County | 8533 |
| 96 | Leslie County | 8243 |
| 97 | Carroll County | 8104 |
| 98 | Metcalfe County | 7867 |
| 99 | Lyon County | 7517 |
| 100 | Livingston County | 7129 |
| 101 | Clinton County | 7098 |
| 102 | McLean County | 7091 |
| 103 | Crittenden County | 6958 |
| 104 | Hancock County | 6932 |
| 105 | Trimble County | 6631 |
| 106 | Gallatin County | 6497 |
| 107 | Bracken County | 6360 |
| 108 | Ballard County | 6117 |
| 109 | Lee County | 6013 |
| 110 | Elliott County | 5903 |
| 111 | Nicholas County | 5686 |
| 112 | Fulton County | 5189 |
| 113 | Wolfe County | 5026 |
| 114 | Menifee County | 4719 |
| 115 | Cumberland County | 4649 |
| 116 | Carlisle County | 3720 |
| 117 | Hickman County | 3530 |
| 118 | Owsley County | 3186 |
| 119 | Robertson County | 1727 |