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 2017, at 67.1%. Hickman County had the lowest, at 53.7%. The median was 59.6% and the figure for Kentucky was 61.2%. Source: the U.S. Census Bureau.

Highest67.1Rowan County
Lowest53.7Hickman County
Median59.6120 counties
Kentucky61.2History

Top 40 counties, 2017

Rowan County: 67.1 %Rowan County67.1Fayette County: 65.8 %Fayette County65.8Madison County: 65 %Madison County65Warren County: 64.4 %Warren County64.4Martin County: 64.3 %Martin County64.3Calloway County: 64.1 %Calloway County64.1Morgan County: 64.1 %Morgan County64.1Campbell County: 63.8 %Campbell County63.8Clay County: 63.2 %Clay County63.2Elliott County: 63.1 %Elliott County63.1Jefferson County: 62.4 %Jefferson County62.4Lyon County: 62.3 %Lyon County62.3McCreary County: 62.2 %McCreary County62.2Spencer County: 62.1 %Spencer County62.1Scott County: 62.1 %Scott County62.1Perry County: 62.1 %Perry County62.1Christian County: 61.9 %Christian County61.9Bullitt County: 61.8 %Bullitt County61.8Hardin County: 61.8 %Hardin County61.8Kenton County: 61.8 %Kenton County61.8Breathitt County: 61.7 %Breathitt County61.7Meade County: 61.7 %Meade County61.7Pike County: 61.6 %Pike County61.6Knott County: 61.6 %Knott County61.6Franklin County: 61.4 %Franklin County61.4Pendleton County: 61.4 %Pendleton County61.4Lee County: 61.4 %Lee County61.4Leslie County: 61.2 %Leslie County61.2Magoffin County: 60.9 %Magoffin County60.9Boyle County: 60.9 %Boyle County60.9Bell County: 60.8 %Bell County60.8Floyd County: 60.7 %Floyd County60.7Powell County: 60.7 %Powell County60.7Oldham County: 60.6 %Oldham County60.6Johnson County: 60.5 %Johnson County60.5Trimble County: 60.5 %Trimble County60.5Letcher County: 60.5 %Letcher County60.5Clark County: 60.5 %Clark County60.5Laurel County: 60.5 %Laurel County60.5Boone County: 60.4 %Boone County60.4
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2017 (%)Change on 2016
1Rowan County67.1-0.5 pts
2Fayette County65.8-0.2 pts
3Madison County65-0.1 pts
4Warren County64.4-0.2 pts
5Martin County64.3-0.8 pts
6Calloway County64.1-0.7 pts
7Morgan County64.1-0.8 pts
8Campbell County63.8-0.1 pts
9Clay County63.2-0.5 pts
10Elliott County63.1-0.4 pts
11Jefferson County62.4-0.2 pts
12Lyon County62.3+0.1 pts
13McCreary County62.2-0.4 pts
14Spencer County62.1-0.3 pts
15Scott County62.1-0.2 pts
16Perry County62.1-0.6 pts
17Christian County61.9+0.3 pts
18Bullitt County61.8-0.1 pts
19Hardin County61.8-0.3 pts
20Kenton County61.8-0.3 pts
21Breathitt County61.7-0.6 pts
22Meade County61.7-0.1 pts
23Pike County61.6-0.7 pts
24Knott County61.6-0.4 pts
25Franklin County61.4-0.6 pts
26Pendleton County61.4-0.2 pts
27Lee County61.4-0.7 pts
28Leslie County61.2-0.4 pts
29Magoffin County60.9-0.4 pts
30Boyle County60.9-0.3 pts
31Bell County60.8-0.3 pts
32Floyd County60.7-0.9 pts
33Powell County60.7-0.3 pts
34Oldham County60.6-0.3 pts
35Johnson County60.5-0.2 pts
36Trimble County60.5-0 pts
37Letcher County60.5-0.5 pts
38Clark County60.5-0.1 pts
39Laurel County60.5-0.5 pts
40Boone County60.4-0.2 pts
41Nelson County60.4-0.4 pts
42Union County60.4-0.8 pts
43Fulton County60.3+0.3 pts
44Adair County60.3-0.6 pts
45Anderson County60.2-0.5 pts
46Boyd County60.2-0.2 pts
47Jessamine County60.2-0.5 pts
48Harlan County60.1-0.7 pts
49Montgomery County60.1-0.2 pts
50Shelby County60.1-0.2 pts
51Muhlenberg County59.9-0.3 pts
52Lawrence County59.9-0.5 pts
53Webster County59.8-0.2 pts
54Jackson County59.8-1 pts
55Henderson County59.8-0.4 pts
56Gallatin County59.7-0.8 pts
57Grant County59.7+0.4 pts
58Woodford County59.7-0.6 pts
59Rockcastle County59.7-0.4 pts
60Harrison County59.6-0.2 pts
61Marion County59.6-0 pts
62Taylor County59.6-0.2 pts
63Estill County59.5-0.1 pts
64Simpson County59.5+0.1 pts
65Carter County59.5-0.5 pts
66Carroll County59.4+0.2 pts
67Knox County59.30 pts
68Garrard County59.3-0.2 pts
69Edmonson County59.3-0 pts
70Whitley County59.3-0.5 pts
71Lewis County59.3-0.7 pts
72Allen County59.1-0 pts
73Daviess County59.1-0.2 pts
73Grayson County59.1-0.3 pts
75Bourbon County59.1-0.4 pts
76Hopkins County59.1-0.4 pts
77Bracken County59.1-0.2 pts
78Henry County59.1-0.2 pts
79Mercer County59-0.2 pts
80McCracken County59-0.4 pts
81Owsley County58.9-0.8 pts
82Larue County58.9-0.6 pts
83Lincoln County58.7-0.6 pts
84Wayne County58.7-0.3 pts
85Mason County58.6-0.4 pts
86Owen County58.6-0.6 pts
87Washington County58.5-1 pts
88Butler County58.5-0.6 pts
89Barren County58.4-0.4 pts
90Logan County58.4-0.2 pts
91Pulaski County58.4-0.2 pts
92Fleming County58.30 pts
93Menifee County58.2-0.1 pts
94Bath County58.2-0.2 pts
95Monroe County58.2+0.1 pts
96Ballard County58.1-0.1 pts
97Nicholas County58.1+0.2 pts
98Hancock County58+0.2 pts
99Russell County58-0.3 pts
100Livingston County57.9-0.7 pts
101Hart County57.9-0.6 pts
102Metcalfe County57.9-0.4 pts
103Wolfe County57.9+0.1 pts
104Green County57.90 pts
105Greenup County57.7-0.3 pts
106Breckinridge County57.7-0.5 pts
107Marshall County57.6-0.2 pts
108Todd County57.5+0.1 pts
109Crittenden County57.50 pts
110Ohio County57.5-0.4 pts
111Graves County57.5-0.4 pts
112Caldwell County57.4-0.4 pts
113Clinton County57.2+0.2 pts
114Casey County57.1-0.3 pts
115McLean County57-0.3 pts
116Cumberland County56.6+0.1 pts
117Robertson County56.4-0.2 pts
118Carlisle County56.2-0.4 pts
119Trigg County55.7-0.5 pts
120Hickman County53.7-0.8 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, 2017) [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, 2017. 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=2017. 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, 2017. 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=2017.

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, 2017 [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=2017 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_kentucky_by_2017,
  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, 2017}},
  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=2017. 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, 2017
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=2017
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-18-64/kentucky-counties?period=2017.
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 67.1% in 2017, according to the U.S. Census Bureau.

Which county has the lowest population aged 18 to 64?

Hickman County, with 53.7% in 2017.

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