Ranking of Kentucky Counties By Population in 2015
Updated on June 21, 2025.
Based on the US Census Vintage data estimates, in 2015, the Population for Kentucky was 4.43M. Among all Kentucky counties, Jefferson County had the highest population (765.32K), followed by Fayette County (316.08K), and Kenton County (164.63K).
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), 2015 Census.
See this for other years:
Ranking of Kentucky Counties By Population in 2015
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| Rank | County | Population |
|---|---|---|
| 1 | Jefferson County | 765322 |
| 2 | Fayette County | 316079 |
| 3 | Kenton County | 164627 |
| 4 | Boone County | 128270 |
| 5 | Warren County | 124224 |
| 6 | Hardin County | 106415 |
| 7 | Daviess County | 99548 |
| 8 | Campbell County | 92612 |
| 9 | Madison County | 88274 |
| 10 | Bullitt County | 78698 |
| 11 | Christian County | 73243 |
| 12 | McCracken County | 64990 |
| 13 | Oldham County | 64586 |
| 14 | Pulaski County | 63898 |
| 15 | Pike County | 61831 |
| 16 | Laurel County | 59937 |
| 17 | Scott County | 52177 |
| 18 | Jessamine County | 51822 |
| 19 | Franklin County | 50090 |
| 20 | Boyd County | 48518 |
| 21 | Henderson County | 46376 |
| 22 | Hopkins County | 46068 |
| 23 | Shelby County | 45838 |
| 24 | Nelson County | 45119 |
| 25 | Barren County | 43559 |
| 26 | Calloway County | 38695 |
| 27 | Floyd County | 37545 |
| 28 | Graves County | 37249 |
| 29 | Whitley County | 36143 |
| 30 | Greenup County | 36030 |
| 31 | Clark County | 35685 |
| 32 | Knox County | 31467 |
| 33 | Muhlenberg County | 31258 |
| 34 | Marshall County | 31068 |
| 35 | Boyle County | 29800 |
| 36 | Meade County | 27743 |
| 37 | Montgomery County | 27594 |
| 38 | Harlan County | 27509 |
| 39 | Carter County | 27443 |
| 40 | Perry County | 27381 |
| 41 | Bell County | 27376 |
| 42 | Logan County | 26761 |
| 43 | Grayson County | 26143 |
| 44 | Woodford County | 25860 |
| 45 | Taylor County | 25562 |
| 46 | Grant County | 24746 |
| 47 | Rowan County | 24658 |
| 48 | Lincoln County | 24351 |
| 49 | Ohio County | 24040 |
| 50 | Johnson County | 23144 |
| 51 | Letcher County | 23043 |
| 52 | Anderson County | 21933 |
| 53 | Mercer County | 21383 |
| 54 | Clay County | 20986 |
| 55 | Allen County | 20655 |
| 56 | Wayne County | 20606 |
| 57 | Bourbon County | 20159 |
| 58 | Breckinridge County | 19987 |
| 59 | Marion County | 19219 |
| 60 | Adair County | 19172 |
| 61 | Harrison County | 18642 |
| 62 | Hart County | 18415 |
| 63 | Spencer County | 18043 |
| 64 | Simpson County | 17913 |
| 65 | McCreary County | 17902 |
| 66 | Russell County | 17694 |
| 67 | Garrard County | 17212 |
| 68 | Mason County | 17052 |
| 69 | Rockcastle County | 16938 |
| 70 | Lawrence County | 15861 |
| 71 | Casey County | 15756 |
| 72 | Knott County | 15681 |
| 73 | Henry County | 15563 |
| 74 | Union County | 14976 |
| 75 | Fleming County | 14576 |
| 76 | Pendleton County | 14494 |
| 77 | Estill County | 14381 |
| 78 | Trigg County | 14222 |
| 79 | Larue County | 14123 |
| 80 | Lewis County | 13666 |
| 81 | Breathitt County | 13358 |
| 82 | Jackson County | 13321 |
| 83 | Morgan County | 13279 |
| 84 | Webster County | 13153 |
| 85 | Magoffin County | 12791 |
| 86 | Caldwell County | 12744 |
| 87 | Butler County | 12742 |
| 88 | Todd County | 12449 |
| 89 | Martin County | 12299 |
| 90 | Powell County | 12224 |
| 91 | Bath County | 12209 |
| 92 | Edmonson County | 12009 |
| 93 | Washington County | 12000 |
| 94 | Green County | 10976 |
| 95 | Owen County | 10737 |
| 96 | Carroll County | 10693 |
| 97 | Leslie County | 10655 |
| 98 | Monroe County | 10616 |
| 99 | Clinton County | 10197 |
| 100 | Metcalfe County | 9917 |
| 101 | McLean County | 9385 |
| 102 | Livingston County | 9290 |
| 103 | Crittenden County | 9174 |
| 104 | Trimble County | 8739 |
| 105 | Hancock County | 8648 |
| 106 | Gallatin County | 8610 |
| 107 | Lyon County | 8478 |
| 108 | Bracken County | 8292 |
| 109 | Ballard County | 8208 |
| 110 | Elliott County | 7546 |
| 111 | Wolfe County | 7247 |
| 112 | Nicholas County | 7072 |
| 113 | Lee County | 7023 |
| 114 | Cumberland County | 6731 |
| 115 | Menifee County | 6371 |
| 116 | Fulton County | 6259 |
| 117 | Carlisle County | 4849 |
| 118 | Hickman County | 4622 |
| 119 | Owsley County | 4449 |
| 120 | Robertson County | 2139 |
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