Ranking of Kentucky Counties By Population in 2018
Updated on June 18, 2025.
Based on the US Census Vintage data estimates, in 2018, the Population for Kentucky was 4.46M. Among all Kentucky counties, Jefferson County had the highest population (768.71K), followed by Fayette County (322.60K), and Kenton County (166.50K).
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), 2018 Census.
See this for other years:
Ranking of Kentucky Counties By Population in 2018
Items per page:
25
0 of 0
| Rank | County | Population |
|---|---|---|
| 1 | Jefferson County | 768706 |
| 2 | Fayette County | 322597 |
| 3 | Kenton County | 166501 |
| 4 | Boone County | 131971 |
| 5 | Warren County | 130926 |
| 6 | Hardin County | 110435 |
| 7 | Daviess County | 100885 |
| 8 | Campbell County | 93990 |
| 9 | Madison County | 92172 |
| 10 | Bullitt County | 81040 |
| 11 | Christian County | 71036 |
| 12 | Oldham County | 66632 |
| 13 | McCracken County | 65391 |
| 14 | Pulaski County | 64735 |
| 15 | Laurel County | 60652 |
| 16 | Pike County | 58567 |
| 17 | Scott County | 55983 |
| 18 | Jessamine County | 53777 |
| 19 | Franklin County | 50807 |
| 20 | Shelby County | 48073 |
| 21 | Boyd County | 47406 |
| 22 | Nelson County | 45781 |
| 23 | Henderson County | 45566 |
| 24 | Hopkins County | 44978 |
| 25 | Barren County | 44071 |
| 26 | Calloway County | 38982 |
| 27 | Graves County | 37260 |
| 28 | Clark County | 36209 |
| 29 | Whitley County | 36196 |
| 30 | Floyd County | 35861 |
| 31 | Greenup County | 35371 |
| 32 | Knox County | 31326 |
| 33 | Marshall County | 31247 |
| 34 | Muhlenberg County | 30841 |
| 35 | Boyle County | 30109 |
| 36 | Meade County | 28648 |
| 37 | Montgomery County | 28179 |
| 38 | Carter County | 27042 |
| 39 | Logan County | 27003 |
| 40 | Bell County | 26534 |
| 41 | Woodford County | 26487 |
| 42 | Harlan County | 26338 |
| 43 | Grayson County | 26265 |
| 44 | Perry County | 26246 |
| 45 | Taylor County | 25483 |
| 46 | Grant County | 25114 |
| 47 | Lincoln County | 24614 |
| 48 | Rowan County | 24488 |
| 49 | Ohio County | 24125 |
| 50 | Anderson County | 22615 |
| 51 | Johnson County | 22432 |
| 52 | Letcher County | 21847 |
| 53 | Mercer County | 21674 |
| 54 | Allen County | 21104 |
| 55 | Wayne County | 20401 |
| 56 | Breckinridge County | 20286 |
| 57 | Clay County | 20116 |
| 58 | Bourbon County | 20102 |
| 59 | Marion County | 19314 |
| 60 | Adair County | 19201 |
| 61 | Spencer County | 18959 |
| 62 | Hart County | 18868 |
| 63 | Harrison County | 18730 |
| 64 | Simpson County | 18386 |
| 65 | Russell County | 17799 |
| 66 | Garrard County | 17528 |
| 67 | McCreary County | 17327 |
| 68 | Mason County | 17105 |
| 69 | Rockcastle County | 16830 |
| 70 | Henry County | 16049 |
| 71 | Casey County | 15950 |
| 72 | Lawrence County | 15589 |
| 73 | Knott County | 15090 |
| 74 | Trigg County | 14666 |
| 75 | Pendleton County | 14572 |
| 76 | Union County | 14519 |
| 77 | Fleming County | 14490 |
| 78 | Larue County | 14300 |
| 79 | Estill County | 14164 |
| 80 | Jackson County | 13415 |
| 81 | Morgan County | 13363 |
| 82 | Lewis County | 13269 |
| 83 | Webster County | 13047 |
| 84 | Breathitt County | 12762 |
| 85 | Butler County | 12731 |
| 86 | Caldwell County | 12684 |
| 87 | Bath County | 12444 |
| 88 | Powell County | 12356 |
| 89 | Todd County | 12339 |
| 90 | Magoffin County | 12331 |
| 91 | Edmonson County | 12247 |
| 92 | Washington County | 12011 |
| 93 | Martin County | 11349 |
| 94 | Green County | 11007 |
| 95 | Owen County | 10867 |
| 96 | Monroe County | 10746 |
| 97 | Carroll County | 10711 |
| 98 | Clinton County | 10142 |
| 99 | Leslie County | 10135 |
| 100 | Metcalfe County | 10074 |
| 101 | McLean County | 9237 |
| 102 | Livingston County | 9222 |
| 103 | Crittenden County | 8900 |
| 104 | Hancock County | 8751 |
| 105 | Gallatin County | 8739 |
| 106 | Trimble County | 8500 |
| 107 | Bracken County | 8273 |
| 108 | Lyon County | 8198 |
| 109 | Ballard County | 7940 |
| 110 | Elliott County | 7469 |
| 111 | Wolfe County | 7215 |
| 112 | Nicholas County | 7198 |
| 113 | Lee County | 7038 |
| 114 | Cumberland County | 6704 |
| 115 | Menifee County | 6415 |
| 116 | Fulton County | 6049 |
| 117 | Carlisle County | 4711 |
| 118 | Owsley County | 4454 |
| 119 | Hickman County | 4424 |
| 120 | Robertson County | 2147 |