Data / Rankings / Population aged 18 to 64 / Counties in Kentucky

Counties in Kentucky by population aged 18 to 64

Rowan County had the highest population aged 18 to 64 of 120 counties in 2023, at 64.7%. Hickman County had the lowest, at 52.8%. The median was 57.6% and the figure for Kentucky was 59.4%. Source: the U.S. Census Bureau.

Highest64.7Rowan County
Lowest52.8Hickman County
Median57.6120 counties
Kentucky59.4History

Top 40 counties, 2023

Rowan County: 64.7 %Rowan County64.7Fayette County: 63.6 %Fayette County63.6Madison County: 63.4 %Madison County63.4Martin County: 63.2 %Martin County63.2Morgan County: 63 %Morgan County63Warren County: 62.6 %Warren County62.6Lee County: 62.2 %Lee County62.2Lyon County: 61.9 %Lyon County61.9Calloway County: 61.8 %Calloway County61.8Scott County: 61.5 %Scott County61.5Elliott County: 61.5 %Elliott County61.5Campbell County: 61.4 %Campbell County61.4Clay County: 61.1 %Clay County61.1Meade County: 60.9 %Meade County60.9Bullitt County: 60.4 %Bullitt County60.4Jefferson County: 60.4 %Jefferson County60.4Kenton County: 60.4 %Kenton County60.4McCreary County: 60.4 %McCreary County60.4Spencer County: 59.8 %Spencer County59.8Edmonson County: 59.8 %Edmonson County59.8Franklin County: 59.5 %Franklin County59.5Anderson County: 59.5 %Anderson County59.5Hardin County: 59.4 %Hardin County59.4Oldham County: 59.4 %Oldham County59.4Powell County: 59.4 %Powell County59.4Perry County: 59.4 %Perry County59.4Boone County: 59.3 %Boone County59.3Laurel County: 59.3 %Laurel County59.3Gallatin County: 59.3 %Gallatin County59.3Boyle County: 59.2 %Boyle County59.2Adair County: 59.2 %Adair County59.2Pike County: 59.2 %Pike County59.2Shelby County: 59 %Shelby County59Montgomery County: 58.9 %Montgomery County58.9Clark County: 58.9 %Clark County58.9Estill County: 58.7 %Estill County58.7Leslie County: 58.7 %Leslie County58.7Simpson County: 58.7 %Simpson County58.7Nelson County: 58.7 %Nelson County58.7Knott County: 58.6 %Knott County58.6
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2023 (%)Change on 2022
1Rowan County64.7-0 pts
2Fayette County63.6-0.2 pts
3Madison County63.4+0.1 pts
4Martin County63.2-0.5 pts
5Morgan County63-0.5 pts
6Warren County62.6-0.1 pts
7Lee County62.2-0.7 pts
8Lyon County61.9-0.4 pts
9Calloway County61.8-0.5 pts
10Scott County61.5-0.2 pts
11Elliott County61.5-0.7 pts
12Campbell County61.4-0.4 pts
13Clay County61.1-0.5 pts
14Meade County60.9-0.2 pts
15Bullitt County60.4-0.3 pts
16Jefferson County60.4-0.4 pts
17Kenton County60.4-0.2 pts
18McCreary County60.4+0.2 pts
19Spencer County59.8-0.3 pts
20Edmonson County59.8+0.3 pts
21Franklin County59.5-0.4 pts
22Anderson County59.5-0.1 pts
23Hardin County59.4-0.3 pts
24Oldham County59.4+0.1 pts
25Powell County59.4+0.3 pts
26Perry County59.4-0.3 pts
27Boone County59.3-0.2 pts
28Laurel County59.3-0.1 pts
29Gallatin County59.3-0.3 pts
30Boyle County59.2-0 pts
31Adair County59.2-0.3 pts
32Pike County59.2-0.2 pts
33Shelby County59-0.2 pts
34Montgomery County58.9-0.2 pts
35Clark County58.9-0.5 pts
36Estill County58.7-0.1 pts
37Leslie County58.7-0.1 pts
38Simpson County58.7-0.5 pts
39Nelson County58.7-0.1 pts
40Knott County58.6-0.1 pts
41Pendleton County58.5-0.5 pts
42Floyd County58.5-0.3 pts
43Marion County58.4-0.2 pts
44Christian County58.4-1.3 pts
45Allen County58.4-0.3 pts
46Johnson County58.3-0.4 pts
47Breathitt County58.3-0.3 pts
48Bell County58.3-0.2 pts
49Muhlenberg County58.3-0.3 pts
50Jessamine County58.2-0.1 pts
51Trimble County58.2-0.7 pts
52Rockcastle County58.20 pts
53Boyd County58.1-0.2 pts
54Grant County58-0.2 pts
55Taylor County57.9-0.2 pts
56Knox County57.9+0.2 pts
57Owen County57.9+0.3 pts
58Hancock County57.7+0.2 pts
59Whitley County57.7-0.2 pts
60Henderson County57.7-0.3 pts
61Mercer County57.6-0.1 pts
62Letcher County57.6-0.5 pts
63Larue County57.4-0.2 pts
64Garrard County57.4-0.2 pts
65Magoffin County57.4-0.6 pts
66Bourbon County57.4-0.1 pts
67Daviess County57.4-0.2 pts
68Fulton County57.4-0.5 pts
69Grayson County57.4-0.2 pts
70Carter County57.3-0.2 pts
71Lawrence County57.3-0.2 pts
72Woodford County57.3-0.2 pts
73Carroll County57.2-0.1 pts
74Harlan County57.2-0.4 pts
75Metcalfe County57.2-0 pts
76Harrison County57.1-0.5 pts
77Union County57.1-0.2 pts
78Hopkins County57.1-0.3 pts
79Henry County57.1-0.5 pts
80Logan County57+0.1 pts
81Ohio County57+0.2 pts
82Breckinridge County57-0.2 pts
83Ballard County56.9-0.4 pts
84McCracken County56.9-0.2 pts
85Pulaski County56.9-0.2 pts
86Jackson County56.9-0.6 pts
87Wolfe County56.9+0.3 pts
88Fleming County56.8-0.3 pts
89Menifee County56.8-0.8 pts
90Wayne County56.7-0.2 pts
91Nicholas County56.7-0.1 pts
92Bracken County56.7-0.3 pts
93Mason County56.7-0.3 pts
94Lewis County56.6-0.3 pts
95Washington County56.6-0.5 pts
96Barren County56.6-0.1 pts
97Hart County56.6-0 pts
98Monroe County56.5-0.1 pts
99Bath County56.5-0.2 pts
100Todd County56.4+0.2 pts
101Butler County56.4-0.3 pts
102Webster County56.3-0.6 pts
103Lincoln County56.3-0.2 pts
104Green County56.3-0.2 pts
105Marshall County56.1-0.1 pts
106Greenup County56-0.1 pts
107Graves County55.8-0.1 pts
108Russell County55.6-0.4 pts
109Casey County55.50 pts
110Owsley County55.5-0.1 pts
111Livingston County55.5-0.5 pts
112Crittenden County55.4-0.3 pts
113McLean County55.4-0.3 pts
114Clinton County55.2-0.4 pts
115Carlisle County55-0.1 pts
116Robertson County54.4-0.7 pts
117Caldwell County54.4-1 pts
118Trigg County53.80 pts
119Cumberland County52.9-1.2 pts
120Hickman County52.8-0.1 pts

Other periods

About this ranking

Residents aged 18 to 64 as a percentage of total population on 1 July. United States: Census Bureau county population estimates by age; states and the nation are sums of their counties.

Not comparable with working-age shares for ages 15 to 64 used in EU and World Bank statistics.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties (Counties in Kentucky by population aged 18 to 64, 2023) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html

MLA 9

Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties, Counties in Kentucky by population aged 18 to 64, 2023. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/population-18-64/kentucky-counties?period=2023. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. Counties in Kentucky by population aged 18 to 64, 2023. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/population-18-64/kentucky-counties?period=2023.

Harvard

U.S. Census Bureau (2026) Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties, Counties in Kentucky by population aged 18 to 64, 2023 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-18-64/kentucky-counties?period=2023 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_kentucky_by_2023,
  author = {{U.S. Census Bureau}},
  title = {{Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties: Counties in Kentucky by population aged 18 to 64, 2023}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.census.gov/programs-surveys/popest/data/data-sets.html},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/population-18-64/kentucky-counties?period=2023. Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties: Counties in Kentucky by population aged 18 to 64, 2023
PY  - 2026
DA  - 2026/06/25
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www.census.gov/programs-surveys/popest/data/data-sets.html
L2  - https://invokely.ai/rankings/population-18-64/kentucky-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-18-64/kentucky-counties?period=2023.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest population aged 18 to 64?

Rowan County, with 64.7% in 2023, according to the U.S. Census Bureau.

Which county has the lowest population aged 18 to 64?

Hickman County, with 52.8% in 2023.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. Retrieved 2026-10-12.

Population aged 18 to 64: other rankings

Counties in Kentucky: more rankings