The graph below ranks each Kentucky County by total residents according to the 2012 census estimates.
Kentucky total population by county
| County | Total Population |
| Jefferson |  750,810 |
| Fayette | 305,252 |
| Kenton | 161,502 |
| Boone | 123,232 |
| Warren | 116,929 |
| Hardin | 107,153 |
| Daviess | 97,737 |
| Campbell | 90,884 |
| Madison | 84,759 |
| Bullitt | 75,869 |
| Christian | 75,504 |
| McCracken | 65,634 |
| Pike | 64,066 |
| Pulaski | 63,607 |
| Oldham | 61,407 |
| Laurel | 59,446 |
| Jessamine | 49,586 |
| Franklin | 49,496 |
| Boyd | 49,198 |
| Scott | 48,991 |
| Hopkins | 46,722 |
| Henderson | 46,472 |
| Nelson | 44,358 |
| Shelby | 43,604 |
| Barren | 42,697 |
| Floyd | 39,127 |
| Calloway | 37,628 |
| Graves | 37,556 |
| Greenup | 36,757 |
| Clark | 35,737 |
| Whitley | 35,617 |
| Knox | 31,697 |
| Muhlenberg | 31,332 |
| Marshall | 31,242 |
| Meade | 29,220 |
| Boyle | 28,924 |
| Harlan | 28,613 |
| Perry | 28,283 |
| Bell | 28,158 |
| Carter | 27,353 |
| Montgomery | 26,875 |
| Logan | 26,681 |
| Grayson | 25,891 |
| Woodford | 25,049 |
| Taylor | 24,677 |
| Grant | 24,566 |
| Lincoln | 24,408 |
| Ohio | 24,028 |
| Letcher | 23,997 |
| Rowan | 23,427 |
| Johnson | 23,406 |
| Anderson | 21,704 |
| Clay | 21,547 |
| Mercer | 21,336 |
| Wayne | 20,785 |
| Allen | 20,259 |
| Breckinridge | 20,050 |
| Marion | 20,039 |
| Bourbon | 20,014 |
| Adair | 18,672 |
| Harrison | 18,576 |
| Hart | 18,424 |
| McCreary | 18,053 |
| Russell | 17,585 |
| Simpson | 17,558 |
| Mason | 17,465 |
| Spencer | 17,432 |
| Rockcastle | 17,049 |
| Garrard | 16,923 |
| Casey | 16,069 |
| Knott | 16,048 |
| Lawrence | 15,829 |
| Henry | 15,345 |
| Union | 15,086 |
| Pendleton | 14,582 |
| Fleming | 14,515 |
| Estill | 14,498 |
| Trigg | 14,376 |
| Larue | 14,087 |
| Lewis | 13,853 |
| Breathitt | 13,627 |
| Webster | 13,523 |
| Morgan | 13,483 |
| Jackson | 13,315 |
| Magoffin | 13,065 |
| Caldwell | 12,937 |
| Butler | 12,791 |
| Martin | 12,758 |
| Todd | 12,661 |
| Powell | 12,479 |
| Edmonson | 12,108 |
| Washington | 11,861 |
| Bath | 11,803 |
| Green | 11,295 |
| Leslie | 11,138 |
| Carroll | 10,924 |
| Monroe | 10,841 |
| Owen | 10,787 |
| Clinton | 10,240 |
| Metcalfe | 9,979 |
| McLean | 9,516 |
| Livingston | 9,449 |
| Crittenden | 9,274 |
| Trimble | 8,822 |
| Hancock | 8,662 |
| Bracken | 8,478 |
| Gallatin | 8,462 |
| Lyon | 8,449 |
| Ballard | 8,328 |
| Elliott | 7,751 |
| Lee | 7,334 |
| Wolfe | 7,183 |
| Nicholas | 7,034 |
| Cumberland | 6,852 |
| Fulton | 6,528 |
| Menifee | 6,307 |
| Carlisle | 5,053 |
| Hickman | 4,777 |
| Owsley | 4,717 |
| Robertson | 2,216 |