Ranking of Kentucky Counties By Population in 2020
Updated on June 18, 2025.
Based on the US Census Vintage data estimates, in 2020, the Population for Kentucky was 4.51M. Among all Kentucky counties, Jefferson County had the highest population (782.90K), followed by Fayette County (322.63K), and Kenton County (169.28K).
The chart below shows the top 10 counties, and the table below shows the ranking of all Kentucky counties.
You can see similar ranking information for related topics, and for other states. You can also see the ranking of all counties in the United States.
Related Topics: Kentucky Census Vintage Data Topic List.
Data Source: US Census Bureau (Vintage), 2020 Census.
See this for other years:
Ranking of Kentucky Counties By Population in 2020
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| Rank | County | Population |
|---|---|---|
| 1 | Jefferson County | 782896 |
| 2 | Fayette County | 322628 |
| 3 | Kenton County | 169276 |
| 4 | Boone County | 136476 |
| 5 | Warren County | 135033 |
| 6 | Hardin County | 110840 |
| 7 | Daviess County | 103398 |
| 8 | Campbell County | 93134 |
| 9 | Madison County | 92990 |
| 10 | Bullitt County | 82364 |
| 11 | Christian County | 72748 |
| 12 | McCracken County | 67926 |
| 13 | Oldham County | 67696 |
| 14 | Pulaski County | 65112 |
| 15 | Laurel County | 62735 |
| 16 | Pike County | 58447 |
| 17 | Scott County | 57535 |
| 18 | Jessamine County | 53019 |
| 19 | Franklin County | 51603 |
| 20 | Shelby County | 48255 |
| 21 | Boyd County | 48206 |
| 22 | Nelson County | 46779 |
| 23 | Hopkins County | 45365 |
| 24 | Henderson County | 44673 |
| 25 | Barren County | 44511 |
| 26 | Calloway County | 37601 |
| 27 | Clark County | 37047 |
| 28 | Whitley County | 36694 |
| 29 | Graves County | 36530 |
| 30 | Greenup County | 35890 |
| 31 | Floyd County | 35802 |
| 32 | Marshall County | 31688 |
| 33 | Muhlenberg County | 30897 |
| 34 | Boyle County | 30761 |
| 35 | Knox County | 30185 |
| 36 | Meade County | 30028 |
| 37 | Perry County | 28369 |
| 38 | Montgomery County | 28105 |
| 39 | Logan County | 27515 |
| 40 | Woodford County | 26907 |
| 41 | Harlan County | 26758 |
| 42 | Carter County | 26614 |
| 43 | Grayson County | 26456 |
| 44 | Taylor County | 25994 |
| 45 | Grant County | 25014 |
| 46 | Rowan County | 24721 |
| 47 | Lincoln County | 24248 |
| 48 | Bell County | 23982 |
| 49 | Anderson County | 23892 |
| 50 | Ohio County | 23744 |
| 51 | Mercer County | 22652 |
| 52 | Johnson County | 22648 |
| 53 | Letcher County | 21468 |
| 54 | Allen County | 20572 |
| 55 | Breckinridge County | 20445 |
| 56 | Clay County | 20309 |
| 57 | Bourbon County | 20284 |
| 58 | Simpson County | 19629 |
| 59 | Marion County | 19594 |
| 60 | Wayne County | 19543 |
| 61 | Spencer County | 19503 |
| 62 | Hart County | 19296 |
| 63 | Adair County | 18881 |
| 64 | Harrison County | 18721 |
| 65 | Russell County | 17997 |
| 66 | Mason County | 17137 |
| 67 | Garrard County | 16964 |
| 68 | McCreary County | 16852 |
| 69 | Lawrence County | 16302 |
| 70 | Rockcastle County | 16063 |
| 71 | Casey County | 15921 |
| 72 | Henry County | 15693 |
| 73 | Fleming County | 15098 |
| 74 | Larue County | 14877 |
| 75 | Pendleton County | 14647 |
| 76 | Knott County | 14163 |
| 77 | Estill County | 14160 |
| 78 | Trigg County | 14081 |
| 79 | Morgan County | 13732 |
| 80 | Breathitt County | 13701 |
| 81 | Union County | 13650 |
| 82 | Powell County | 13099 |
| 83 | Lewis County | 13088 |
| 84 | Webster County | 13022 |
| 85 | Jackson County | 12968 |
| 86 | Bath County | 12717 |
| 87 | Caldwell County | 12636 |
| 88 | Butler County | 12317 |
| 89 | Todd County | 12283 |
| 90 | Edmonson County | 12147 |
| 91 | Washington County | 12038 |
| 92 | Magoffin County | 11605 |
| 93 | Monroe County | 11320 |
| 94 | Owen County | 11302 |
| 95 | Martin County | 11250 |
| 96 | Green County | 11131 |
| 97 | Carroll County | 10835 |
| 98 | Leslie County | 10471 |
| 99 | Metcalfe County | 10285 |
| 100 | Clinton County | 9228 |
| 101 | McLean County | 9133 |
| 102 | Hancock County | 9104 |
| 103 | Crittenden County | 9003 |
| 104 | Livingston County | 8872 |
| 105 | Lyon County | 8678 |
| 106 | Gallatin County | 8675 |
| 107 | Trimble County | 8463 |
| 108 | Bracken County | 8405 |
| 109 | Ballard County | 7714 |
| 110 | Nicholas County | 7540 |
| 111 | Lee County | 7364 |
| 112 | Elliott County | 7335 |
| 113 | Wolfe County | 6557 |
| 114 | Fulton County | 6511 |
| 115 | Menifee County | 6142 |
| 116 | Cumberland County | 5859 |
| 117 | Carlisle County | 4805 |
| 118 | Hickman County | 4530 |
| 119 | Owsley County | 4032 |
| 120 | Robertson County | 2184 |