Kentucky Counties by Population

The most populated counties in Kentucky are Jefferson County with 779,232, Fayette County at 321,276, Kenton County with 169,066, Boone County at 136,150, and Warren County with 135,307. You can get the most current Census population data for all 120 Kentucky counties, sorted from the most populous counties in Kentucky to the least, according to the 2022 American Community Survey.

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Rank County Population
1 Jefferson County 779,232
2 Fayette County 321,276
3 Kenton County 169,066
4 Boone County 136,150
5 Warren County 135,307
6 Hardin County 111,005
7 Daviess County 102,916
8 Campbell County 93,122
9 Madison County 92,955
10 Bullitt County 82,482
11 Christian County 72,766
12 Oldham County 67,997
13 McCracken County 67,573
14 Pulaski County 65,145
15 Laurel County 62,442
16 Pike County 58,196
17 Scott County 57,286
18 Jessamine County 53,381
19 Franklin County 51,475
20 Boyd County 48,242
21 Shelby County 48,105
22 Nelson County 46,779
23 Hopkins County 45,223
24 Henderson County 44,770
25 Barren County 44,511
26 Calloway County 37,345
27 Clark County 36,897
28 Graves County 36,701
29 Whitley County 36,648
30 Greenup County 35,853
31 Floyd County 35,780
32 Marshall County 31,706
33 Muhlenberg County 30,735
34 Boyle County 30,613
35 Knox County 30,207
36 Meade County 29,964
37 Montgomery County 28,188
38 Perry County 28,136
39 Logan County 27,498
40 Woodford County 26,886
41 Carter County 26,671
42 Harlan County 26,589
43 Grayson County 26,465
44 Taylor County 26,056
45 Grant County 25,085
46 Rowan County 24,551
47 Lincoln County 24,320
48 Bell County 24,248
49 Anderson County 23,839
50 Ohio County 23,782
51 Mercer County 22,662
52 Johnson County 22,631
53 Letcher County 21,490
54 Allen County 20,773
55 Breckinridge County 20,528
56 Clay County 20,322
57 Bourbon County 20,228
58 Wayne County 19,666
59 Marion County 19,627
60 Simpson County 19,574
61 Spencer County 19,549
62 Hart County 19,345
63 Adair County 18,887
64 Harrison County 18,803
65 Russell County 18,021
66 Garrard County 17,175
67 Mason County 17,068
68 McCreary County 16,892
69 Lawrence County 16,228
70 Rockcastle County 16,171
71 Casey County 15,942
72 Henry County 15,731
73 Fleming County 15,111
74 Larue County 14,902
75 Pendleton County 14,638
76 Knott County 14,282
77 Trigg County 14,154
78 Estill County 14,138
79 Morgan County 13,840
80 Breathitt County 13,580
81 Union County 13,495
82 Powell County 13,089
83 Lewis County 13,063
84 Jackson County 13,002
85 Webster County 12,951
86 Bath County 12,739
87 Caldwell County 12,635
88 Butler County 12,365
89 Todd County 12,281
90 Edmonson County 12,179
91 Washington County 12,025
92 Magoffin County 11,647
93 Monroe County 11,331
94 Martin County 11,298
95 Owen County 11,229
96 Green County 11,198
97 Carroll County 10,842
98 Leslie County 10,468
99 Metcalfe County 10,313
100 Clinton County 9,295
101 McLean County 9,173
102 Hancock County 9,058
103 Livingston County 8,980
104 Crittenden County 8,979
105 Lyon County 8,721
106 Gallatin County 8,720
107 Trimble County 8,510
108 Bracken County 8,420
109 Ballard County 7,742
110 Nicholas County 7,613
111 Elliott County 7,378
112 Lee County 7,338
113 Wolfe County 6,573
114 Fulton County 6,480
115 Menifee County 6,174
116 Cumberland County 5,974
117 Carlisle County 4,782
118 Hickman County 4,491
119 Owsley County 4,054
120 Robertson County 2,207

United States Census Bureau. B01001 SEX BY AGE, 2022 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 7 December 2023. http://www.census.gov/.

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