All counties in Kentucky
| County Name | Population | State | Rank |
|---|
| Jefferson County | 741,096 | Kentucky | 1 |
| Fayette County | 295,803 | Kentucky | 2 |
| Kenton County | 159,720 | Kentucky | 3 |
| Boone County | 118,811 | Kentucky | 4 |
| Warren County | 113,792 | Kentucky | 5 |
| Hardin County | 105,543 | Kentucky | 6 |
| Daviess County | 96,656 | Kentucky | 7 |
| Campbell County | 90,336 | Kentucky | 8 |
| Madison County | 82,916 | Kentucky | 9 |
| Bullitt County | 74,319 | Kentucky | 10 |
| Christian County | 73,955 | Kentucky | 11 |
| Mccracken County | 65,565 | Kentucky | 12 |
| Pike County | 65,024 | Kentucky | 13 |
| Pulaski County | 63,063 | Kentucky | 14 |
| Oldham County | 60,316 | Kentucky | 15 |
| Laurel County | 58,849 | Kentucky | 16 |
| Boyd County | 49,542 | Kentucky | 17 |
| Franklin County | 49,285 | Kentucky | 18 |
| Jessamine County | 48,586 | Kentucky | 19 |
| Scott County | 47,173 | Kentucky | 20 |
| Hopkins County | 46,920 | Kentucky | 21 |
| Henderson County | 46,250 | Kentucky | 22 |
| Nelson County | 43,437 | Kentucky | 23 |
| Barren County | 42,173 | Kentucky | 24 |
| Shelby County | 42,074 | Kentucky | 25 |
| Floyd County | 39,451 | Kentucky | 26 |
| Calloway County | 37,191 | Kentucky | 27 |
| Graves County | 37,121 | Kentucky | 28 |
| Greenup County | 36,910 | Kentucky | 29 |
| Whitley County | 35,637 | Kentucky | 30 |
| Clark County | 35,613 | Kentucky | 31 |
| Knox County | 31,883 | Kentucky | 32 |
| Muhlenberg County | 31,499 | Kentucky | 33 |
| Marshall County | 31,448 | Kentucky | 34 |
| Harlan County | 29,278 | Kentucky | 35 |
| Perry County | 28,712 | Kentucky | 36 |
| Bell County | 28,691 | Kentucky | 37 |
| Meade County | 28,602 | Kentucky | 38 |
| Boyle County | 28,432 | Kentucky | 39 |
| Carter County | 27,720 | Kentucky | 40 |
| Logan County | 26,835 | Kentucky | 41 |
| Montgomery County | 26,499 | Kentucky | 42 |
| Grayson County | 25,746 | Kentucky | 43 |
| Woodford County | 24,939 | Kentucky | 44 |
| Lincoln County | 24,742 | Kentucky | 45 |
| Grant County | 24,662 | Kentucky | 46 |
| Letcher County | 24,519 | Kentucky | 47 |
| Taylor County | 24,512 | Kentucky | 48 |
| Ohio County | 23,842 | Kentucky | 49 |
| Johnson County | 23,356 | Kentucky | 50 |
| Rowan County | 23,333 | Kentucky | 51 |
| Clay County | 21,730 | Kentucky | 52 |
| Anderson County | 21,421 | Kentucky | 53 |
| Mercer County | 21,331 | Kentucky | 54 |
| Wayne County | 20,813 | Kentucky | 55 |
| Breckinridge County | 20,059 | Kentucky | 56 |
| Bourbon County | 19,985 | Kentucky | 57 |
| Allen County | 19,956 | Kentucky | 58 |
| Marion County | 19,820 | Kentucky | 59 |
| Harrison County | 18,846 | Kentucky | 60 |
| Adair County | 18,656 | Kentucky | 61 |
| Mccreary County | 18,306 | Kentucky | 62 |
| Hart County | 18,199 | Kentucky | 63 |
| Russell County | 17,565 | Kentucky | 64 |
| Mason County | 17,490 | Kentucky | 65 |
| Simpson County | 17,327 | Kentucky | 66 |
| Spencer County | 17,061 | Kentucky | 67 |
| Rockcastle County | 17,056 | Kentucky | 68 |
| Garrard County | 16,912 | Kentucky | 69 |
| Knott County | 16,346 | Kentucky | 70 |
| Casey County | 15,955 | Kentucky | 71 |
| Lawrence County | 15,860 | Kentucky | 72 |
| Henry County | 15,416 | Kentucky | 73 |
| Union County | 15,007 | Kentucky | 74 |
| Pendleton County | 14,877 | Kentucky | 75 |
| Estill County | 14,672 | Kentucky | 76 |
| Fleming County | 14,348 | Kentucky | 77 |
| Trigg County | 14,339 | Kentucky | 78 |
| Larue County | 14,193 | Kentucky | 79 |
| Morgan County | 13,923 | Kentucky | 80 |
| Breathitt County | 13,878 | Kentucky | 81 |
| Lewis County | 13,870 | Kentucky | 82 |
| Webster County | 13,621 | Kentucky | 83 |
| Jackson County | 13,494 | Kentucky | 84 |
| Magoffin County | 13,333 | Kentucky | 85 |
| Caldwell County | 12,984 | Kentucky | 86 |
| Martin County | 12,929 | Kentucky | 87 |
| Butler County | 12,690 | Kentucky | 88 |
| Powell County | 12,613 | Kentucky | 89 |
| Todd County | 12,460 | Kentucky | 90 |
| Edmonson County | 12,161 | Kentucky | 91 |
| Washington County | 11,717 | Kentucky | 92 |
| Bath County | 11,591 | Kentucky | 93 |
| Leslie County | 11,310 | Kentucky | 94 |
| Green County | 11,258 | Kentucky | 95 |
| Monroe County | 10,963 | Kentucky | 96 |
| Owen County | 10,841 | Kentucky | 97 |
| Carroll County | 10,811 | Kentucky | 98 |
| Clinton County | 10,272 | Kentucky | 99 |
| Metcalfe County | 10,099 | Kentucky | 100 |
| Mclean County | 9,531 | Kentucky | 101 |
| Livingston County | 9,519 | Kentucky | 102 |
| Crittenden County | 9,315 | Kentucky | 103 |
| Trimble County | 8,809 | Kentucky | 104 |
| Gallatin County | 8,589 | Kentucky | 105 |
| Hancock County | 8,565 | Kentucky | 106 |
| Bracken County | 8,488 | Kentucky | 107 |
| Lyon County | 8,314 | Kentucky | 108 |
| Ballard County | 8,249 | Kentucky | 109 |
| Lee County | 7,887 | Kentucky | 110 |
| Elliott County | 7,852 | Kentucky | 111 |
| Wolfe County | 7,355 | Kentucky | 112 |
| Nicholas County | 7,135 | Kentucky | 113 |
| Cumberland County | 6,856 | Kentucky | 114 |
| Fulton County | 6,813 | Kentucky | 115 |
| Menifee County | 6,306 | Kentucky | 116 |
| Carlisle County | 5,104 | Kentucky | 117 |
| Hickman County | 4,902 | Kentucky | 118 |
| Owsley County | 4,755 | Kentucky | 119 |
| Robertson County | 2,282 | Kentucky | 120 |