Kentucky Population By County in 2018
Updated on December 2, 2021.

According to the US Census Bureau population estimates, there were 4,464,273 people living in Kentucky in 2018. Jefferson County was the most populated county with 768,706 residents, followed by Fayette County with 322,597 residents, and Kenton County with 166,501 residents. Robertson County with a population of 2,147 was the least populated county in Kentucky in 2018.

Use the map below to interactively explore the population of each county in Kentucky in 2018. The data can also be explored further by sorting and filtering with the table below.

Hover/Click on the counties to see the values.
Kentucky Population By County (2018)
See also Population estimate for other years:
Table of Kentucky Population By County in 2018
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County Population % of State Population
Adair 19,201 0.43%
Allen 21,104 0.47%
Anderson 22,615 0.51%
Ballard 7,940 0.18%
Barren 44,071 0.99%
Bath 12,444 0.28%
Bell 26,534 0.59%
Boone 131,971 2.96%
Bourbon 20,102 0.45%
Boyd 47,406 1.06%
Boyle 30,109 0.67%
Bracken 8,273 0.19%
Breathitt 12,762 0.29%
Breckinridge 20,286 0.45%
Bullitt 81,040 1.82%
Butler 12,731 0.28%
Caldwell 12,684 0.28%
Calloway 38,982 0.87%
Campbell 93,990 2.11%
Carlisle 4,711 0.11%
Carroll 10,711 0.24%
Carter 27,042 0.61%
Casey 15,950 0.36%
Christian 71,036 1.59%
Clark 36,209 0.81%
Clay 20,116 0.45%
Clinton 10,142 0.23%
Crittenden 8,900 0.20%
Cumberland 6,704 0.15%
Daviess 100,885 2.26%
Edmonson 12,247 0.27%
Elliott 7,469 0.17%
Estill 14,164 0.32%
Fayette 322,597 7.23%
Fleming 14,490 0.33%
Floyd 35,861 0.80%
Franklin 50,807 1.14%
Fulton 6,049 0.14%
Gallatin 8,739 0.20%
Garrard 17,528 0.39%
Grant 25,114 0.56%
Graves 37,260 0.84%
Grayson 26,265 0.59%
Green 11,007 0.25%
Greenup 35,371 0.79%
Hancock 8,751 0.20%
Hardin 110,435 2.47%
Harlan 26,338 0.59%
Harrison 18,730 0.42%
Hart 18,868 0.42%
Henderson 45,566 1.02%
Henry 16,049 0.36%
Hickman 4,424 0.10%
Hopkins 44,978 1.01%
Jackson 13,415 0.30%
Jefferson 768,706 17.22%
Jessamine 53,777 1.21%
Johnson 22,432 0.50%
Kenton 166,501 3.73%
Knott 15,090 0.34%
Knox 31,326 0.70%
Larue 14,300 0.32%
Laurel 60,652 1.36%
Lawrence 15,589 0.35%
Lee 7,038 0.16%
Leslie 10,135 0.23%
Letcher 21,847 0.49%
Lewis 13,269 0.30%
Lincoln 24,614 0.55%
Livingston 9,222 0.21%
Logan 27,003 0.61%
Lyon 8,198 0.18%
McCracken 65,391 1.47%
McCreary 17,327 0.39%
McLean 9,237 0.21%
Madison 92,172 2.07%
Magoffin 12,331 0.28%
Marion 19,314 0.43%
Marshall 31,247 0.70%
Martin 11,349 0.25%
Mason 17,105 0.38%
Meade 28,648 0.64%
Menifee 6,415 0.14%
Mercer 21,674 0.49%
Metcalfe 10,074 0.23%
Monroe 10,746 0.24%
Montgomery 28,179 0.63%
Morgan 13,363 0.30%
Muhlenberg 30,841 0.69%
Nelson 45,781 1.02%
Nicholas 7,198 0.16%
Ohio 24,125 0.54%
Oldham 66,632 1.49%
Owen 10,867 0.24%
Owsley 4,454 0.10%
Pendleton 14,572 0.33%
Perry 26,246 0.59%
Pike 58,567 1.31%
Powell 12,356 0.28%
Pulaski 64,735 1.45%
Robertson 2,147 0.05%
Rockcastle 16,830 0.38%
Rowan 24,488 0.55%
Russell 17,799 0.40%
Scott 55,983 1.25%
Shelby 48,073 1.08%
Simpson 18,386 0.41%
Spencer 18,959 0.43%
Taylor 25,483 0.57%
Todd 12,339 0.28%
Trigg 14,666 0.33%
Trimble 8,500 0.19%
Union 14,519 0.33%
Warren 130,926 2.93%
Washington 12,011 0.27%
Wayne 20,401 0.46%
Webster 13,047 0.29%
Whitley 36,196 0.81%
Wolfe 7,215 0.16%
Woodford 26,487 0.59%