Data / Rankings / Population under 18 / Counties in Kentucky

Counties in Kentucky by population under 18

Todd County had the highest population under 18 of 120 counties in 2022, at 27.1%. Lyon County had the lowest, at 13.2%. The median was 22.8% and the figure for Kentucky was 22.6%. Source: the U.S. Census Bureau.

Highest27.1Todd County
Lowest13.2Lyon County
Median22.8120 counties
Kentucky22.6History

Top 40 counties, 2022

Todd County: 27.1 %Todd County27.1Christian County: 27 %Christian County27Grant County: 26.7 %Grant County26.7Carroll County: 25.7 %Carroll County25.7Boone County: 25.7 %Boone County25.7Bath County: 25.6 %Bath County25.6Oldham County: 25.4 %Oldham County25.4Hart County: 25.3 %Hart County25.3Whitley County: 25.1 %Whitley County25.1Nicholas County: 24.8 %Nicholas County24.8Scott County: 24.7 %Scott County24.7Jessamine County: 24.7 %Jessamine County24.7Graves County: 24.5 %Graves County24.5Hardin County: 24.5 %Hardin County24.5Gallatin County: 24.5 %Gallatin County24.5Logan County: 24.2 %Logan County24.2Barren County: 24.2 %Barren County24.2Lincoln County: 24.2 %Lincoln County24.2Butler County: 24.1 %Butler County24.1Bracken County: 24.1 %Bracken County24.1Wolfe County: 24 %Wolfe County24Lewis County: 24 %Lewis County24Casey County: 24 %Casey County24Webster County: 24 %Webster County24Daviess County: 24 %Daviess County24Fleming County: 23.8 %Fleming County23.8Powell County: 23.7 %Powell County23.7Spencer County: 23.7 %Spencer County23.7Lawrence County: 23.6 %Lawrence County23.6Ohio County: 23.6 %Ohio County23.6Jackson County: 23.6 %Jackson County23.6Carlisle County: 23.6 %Carlisle County23.6Allen County: 23.6 %Allen County23.6Knox County: 23.6 %Knox County23.6Warren County: 23.5 %Warren County23.5Meade County: 23.4 %Meade County23.4Marion County: 23.4 %Marion County23.4Monroe County: 23.4 %Monroe County23.4Montgomery County: 23.4 %Montgomery County23.4Shelby County: 23.3 %Shelby County23.3
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2022 (%)Change on 2021
1Todd County27.10 pts
2Christian County27+0.5 pts
3Grant County26.7-0 pts
4Carroll County25.7+0.1 pts
5Boone County25.7-0.2 pts
6Bath County25.6+0.3 pts
7Oldham County25.4-0.7 pts
8Hart County25.3-0 pts
9Whitley County25.1-0.1 pts
10Nicholas County24.8+0.2 pts
11Scott County24.7-0.3 pts
12Jessamine County24.7-0.1 pts
13Graves County24.50 pts
14Hardin County24.5-0 pts
15Gallatin County24.5-0.6 pts
16Logan County24.2+0.2 pts
17Barren County24.2+0.1 pts
18Lincoln County24.2+0.2 pts
19Butler County24.1+0.1 pts
20Bracken County24.1+0.2 pts
21Wolfe County24-0.1 pts
22Lewis County24-0.2 pts
23Casey County24-0.2 pts
24Webster County24+0.3 pts
25Daviess County24-0.1 pts
26Fleming County23.8-0.2 pts
27Powell County23.7+0.2 pts
28Spencer County23.7+0.1 pts
29Lawrence County23.60 pts
30Ohio County23.6-0.5 pts
31Jackson County23.6+0.2 pts
32Carlisle County23.6+0.2 pts
33Allen County23.6+0.1 pts
34Knox County23.6+0.1 pts
35Warren County23.5+0.1 pts
36Meade County23.4-0.7 pts
37Marion County23.4-0.2 pts
38Monroe County23.4+0.3 pts
39Montgomery County23.40 pts
40Shelby County23.3-0.4 pts
41Metcalfe County23.3-0.1 pts
42Grayson County23.2+0.3 pts
43Kenton County23.2-0.2 pts
44Nelson County23.2-0.2 pts
45Pendleton County23.1-0.3 pts
46Larue County23.1-0.3 pts
47Clinton County23-0.2 pts
48Owen County23-0.4 pts
49Washington County23-0.2 pts
50Hancock County23-0.5 pts
51Breckinridge County22.90 pts
52Garrard County22.9+0.2 pts
53Taylor County22.9+0.3 pts
54Simpson County22.9-0.2 pts
55Harrison County22.9+0.2 pts
55Laurel County22.9-0.1 pts
57Henry County22.8+0.2 pts
58Bourbon County22.8-0 pts
59Harlan County22.8+0.2 pts
59Russell County22.8-0 pts
61Mason County22.8-0 pts
62Owsley County22.8+0.5 pts
63Anderson County22.7-0.2 pts
64McCreary County22.7-0.4 pts
65Hopkins County22.6-0 pts
66Crittenden County22.5-0.1 pts
67McLean County22.5-0.1 pts
68Union County22.4-0 pts
69Henderson County22.4-0.3 pts
70Trigg County22.3+0.4 pts
71Caldwell County22.3+0.1 pts
72Bullitt County22.3-0.2 pts
73Breathitt County22.2-0 pts
74Bell County22.2+0.1 pts
75Cumberland County22.2+0.2 pts
76Carter County22.2+0.1 pts
77Magoffin County22.2+0.1 pts
78Menifee County22.1-0.1 pts
79Perry County22.1-0 pts
80Pulaski County22-0.2 pts
81Clark County22-0.3 pts
82Wayne County22-0.2 pts
83Trimble County21.9-0 pts
84Robertson County21.9-0.1 pts
85Floyd County21.9-0.3 pts
86Rockcastle County21.9+0.2 pts
87Green County21.9-0.3 pts
88Mercer County21.8-0.4 pts
89Woodford County21.8-0.3 pts
90Greenup County21.7-0.3 pts
91Johnson County21.6-0.1 pts
92Jefferson County21.6-0 pts
93Letcher County21.60 pts
94McCracken County21.6-0.1 pts
95Clay County21.50 pts
96Boyd County21.5-0 pts
97Madison County21.2-0.1 pts
98Leslie County21.20 pts
99Muhlenberg County21.2-0.4 pts
100Adair County21.2+0.1 pts
101Estill County21.2-0.2 pts
102Franklin County21-0.1 pts
103Fayette County20.9-0.2 pts
104Livingston County20.8-0.3 pts
105Knott County20.8-0.2 pts
106Boyle County20.7+0.1 pts
107Hickman County20.7+0.2 pts
108Campbell County20.6-0.2 pts
109Edmonson County20.6-0.5 pts
110Pike County20.3-0.1 pts
111Fulton County20.2+0.3 pts
112Ballard County20.1-0.3 pts
113Marshall County20.1-0.3 pts
114Rowan County19.9+0.3 pts
115Morgan County19.4-0.6 pts
116Martin County19-0.6 pts
117Calloway County18.8+0.3 pts
118Elliott County18.1-0.7 pts
119Lee County18-0.3 pts
120Lyon County13.2-0.7 pts

Other periods

About this ranking

Residents aged 0 to 17 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.

Uses the US age of majority. Not comparable with population_0_14_share, which stops at 14.

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 0 to 17 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 0 to 17 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 under 18, 2022) [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 0 to 17 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 under 18, 2022. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/population-under-18/kentucky-counties?period=2022. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program, county population by age and sex: residents aged 0 to 17 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 under 18, 2022. 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-under-18/kentucky-counties?period=2022.

Harvard

U.S. Census Bureau (2026) Population Estimates Program, county population by age and sex: residents aged 0 to 17 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 under 18, 2022 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-under-18/kentucky-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_kentucky_by_2022,
  author = {{U.S. Census Bureau}},
  title = {{Population Estimates Program, county population by age and sex: residents aged 0 to 17 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 under 18, 2022}},
  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-under-18/kentucky-counties?period=2022. Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 0 to 17 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 0 to 17 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 under 18, 2022
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-under-18/kentucky-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/kentucky-counties?period=2022.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 0 to 17 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  -
Embed this chart

Paste this code into a web page or a blog post. The chart shows the latest figures as they are published, with the source and a link back to this page.

Sites that read oEmbed links, such as WordPress, can show the chart when you paste the link to this page.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in Kentucky by population under 18 using official data, and cite the source.
rank_places {"indicator":"population_0_17_share","level":"province","within":"Kentucky","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population_0_17_share&level=province&within=Kentucky&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

Which county has the highest population under 18?

Todd County, with 27.1% in 2022, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Lyon County, with 13.2% in 2022.

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 0 to 17 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 under 18: other rankings

Counties in Kentucky: more rankings