Kentucky Citizen Population By County in 2021 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2021, the citizen population for Kentucky was 4,387,075 and represented 97.62% of the total Kentucky population.

Among all Kentucky counties, Jefferson had the highest citizen population (743.69K), followed by Fayette (299.64K), and Kenton (164.56K).

In terms of percentages, Jackson had the highest percentage of its population being citizens (100.00%), followed by Livingston (100.00%), and Menifee (100.00%).

The chart and table below shows the citizen population of each county and the percentage of each county's population that were citizens.

You can see similar information for other states and by state for the United States.

You may also be interested in:
Kentucky Citizen Voting-age Population By County in 2021

Data Source: US Census - ACS 5-Year (CVAP).

See this for other years:

Kentucky Citizen Population By County in 2021

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County	Citizen Population	% of County Population
Jefferson	743685	95.29
Fayette	299640	93.24
Kenton	164555	97.80
Boone	129760	96.40
Warren	125500	94.21
Hardin	108395	98.42
Daviess	100460	98.02
Campbell	91795	98.68
Madison	91050	98.76
Bullitt	80820	98.89
Christian	71410	98.67
McCracken	66980	99.38
Oldham	66515	98.42
Pulaski	63865	98.69
Laurel	61910	99.71
Pike	58700	99.64
Scott	55460	98.57
Jessamine	51655	97.44
Franklin	49725	96.89
Boyd	48055	99.20
Nelson	46085	99.24
Shelby	45230	95.17
Hopkins	45080	99.23
Henderson	44925	99.61
Barren	43690	98.68
Calloway	36725	98.49
Graves	36400	98.93
Clark	36385	99.10
Whitley	36345	99.36
Floyd	35980	99.60
Greenup	35910	99.76
Marshall	31630	99.91
Muhlenberg	30740	99.13
Knox	30315	99.84
Boyle	29985	98.41
Meade	29515	99.26
Perry	28080	98.80
Montgomery	27880	99.27
Logan	27150	99.38
Harlan	26900	99.93
Carter	26655	99.39
Grayson	26155	99.26
Woodford	25775	96.32
Taylor	25705	99.06
Grant	24905	99.94
Bell	24670	99.98
Rowan	24435	99.11
Lincoln	24150	99.32
Anderson	23490	99.34
Ohio	23290	97.61
Johnson	22670	99.45
Mercer	22000	97.91
Letcher	21750	99.84
Clay	20390	99.54
Allen	20360	98.81
Breckinridge	20290	99.73
Bourbon	19715	97.21
Wayne	19455	98.53
Marion	19275	98.57
Simpson	19235	99.53
Spencer	19150	99.46
Hart	19140	99.71
Harrison	18560	99.30
Adair	18520	98.35
Russell	17655	98.58
McCreary	16995	99.71
Mason	16960	99.15
Garrard	16625	97.68
Lawrence	16235	99.75
Rockcastle	16165	100.00
Casey	15760	99.34
Henry	15530	98.98
Fleming	14910	99.43
Pendleton	14580	99.69
Knott	14455	99.66
Larue	14320	96.95
Estill	14050	99.26
Trigg	13995	99.50
Morgan	13695	99.46
Union	13690	99.31
Breathitt	13610	99.71
Lewis	13075	99.77
Jackson	13030	100.00
Powell	13020	99.77
Bath	12670	99.92
Webster	12650	97.35
Caldwell	12565	99.41
Butler	12165	97.99
Edmonson	12150	99.88
Todd	11995	98.28
Washington	11775	98.49
Magoffin	11745	99.37
Martin	11345	99.56
Monroe	11155	98.98
Owen	11145	99.87
Green	11120	99.82
Carroll	10660	98.61
Leslie	10615	99.95
Metcalfe	10265	99.90
Clinton	9255	98.77
McLean	9140	99.56
Hancock	9020	99.67
Livingston	8990	100.00
Crittenden	8960	99.61
Gallatin	8585	98.74
Lyon	8560	98.39
Bracken	8390	99.94
Trimble	8375	98.53
Ballard	7785	99.62
Nicholas	7515	100.00
Elliott	7405	99.87
Lee	7220	99.38
Wolfe	6660	99.93
Fulton	6495	99.85
Menifee	6150	100.00
Cumberland	5965	99.00
Carlisle	4815	99.90
Hickman	4515	99.67
Owsley	4095	100.00
Robertson	2190	99.77