Data / Rankings / Population under 18 / Counties in Kentucky

Counties in Kentucky by population under 18

Boone County had the highest population under 18 of 120 counties in 2014, at 27.5%. Lyon County had the lowest, at 14.5%. The median was 22.8% and the figure for Kentucky was 23.1%. Source: the U.S. Census Bureau.

Highest27.5Boone County
Lowest14.5Lyon County
Median22.8120 counties
Kentucky23.1History

Top 40 counties, 2014

Boone County: 27.5 %Boone County27.5Grant County: 27.4 %Grant County27.4Christian County: 27.3 %Christian County27.3Todd County: 27.3 %Todd County27.3Oldham County: 26.7 %Oldham County26.7Scott County: 26.2 %Scott County26.2Gallatin County: 26 %Gallatin County26Meade County: 26 %Meade County26Jessamine County: 25.6 %Jessamine County25.6Bath County: 25.4 %Bath County25.4Hardin County: 25 %Hardin County25Nelson County: 25 %Nelson County25Carroll County: 25 %Carroll County25Hancock County: 24.9 %Hancock County24.9Hart County: 24.9 %Hart County24.9Shelby County: 24.8 %Shelby County24.8Graves County: 24.8 %Graves County24.8Bracken County: 24.7 %Bracken County24.7Kenton County: 24.7 %Kenton County24.7Spencer County: 24.6 %Spencer County24.6Marion County: 24.5 %Marion County24.5Owen County: 24.5 %Owen County24.5Ohio County: 24.5 %Ohio County24.5Montgomery County: 24.3 %Montgomery County24.3Simpson County: 24.2 %Simpson County24.2Anderson County: 24.2 %Anderson County24.2Daviess County: 24.2 %Daviess County24.2Logan County: 24.2 %Logan County24.2Allen County: 24.1 %Allen County24.1Fleming County: 24.1 %Fleming County24.1Bullitt County: 24 %Bullitt County24Wolfe County: 23.9 %Wolfe County23.9Barren County: 23.8 %Barren County23.8Clinton County: 23.8 %Clinton County23.8Grayson County: 23.8 %Grayson County23.8Laurel County: 23.8 %Laurel County23.8Knox County: 23.7 %Knox County23.7Lincoln County: 23.7 %Lincoln County23.7Metcalfe County: 23.7 %Metcalfe County23.7Whitley County: 23.6 %Whitley County23.6
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2014 (%)Change on 2013
1Boone County27.5-0.3 pts
2Grant County27.4+0.2 pts
3Christian County27.3-0.6 pts
4Todd County27.3-0 pts
5Oldham County26.70 pts
6Scott County26.2-0.2 pts
7Gallatin County26-0.2 pts
8Meade County26-0.3 pts
9Jessamine County25.6+0.1 pts
10Bath County25.4+0.2 pts
11Hardin County25-0 pts
12Nelson County25-0.3 pts
13Carroll County25-0.2 pts
14Hancock County24.9+0.2 pts
15Hart County24.9+0.1 pts
16Shelby County24.8-0.1 pts
17Graves County24.8+0.1 pts
18Bracken County24.7+0.1 pts
19Kenton County24.7-0.1 pts
20Spencer County24.6-0.1 pts
21Marion County24.5+0.8 pts
22Owen County24.5+0.4 pts
23Ohio County24.50 pts
24Montgomery County24.3-0.2 pts
25Simpson County24.2-0.2 pts
26Anderson County24.2-0.1 pts
27Daviess County24.2-0.2 pts
28Logan County24.2-0 pts
29Allen County24.10 pts
30Fleming County24.1-0 pts
31Bullitt County24-0.2 pts
32Wolfe County23.9-0.3 pts
33Barren County23.80 pts
34Clinton County23.8+0.2 pts
35Grayson County23.8+0.1 pts
35Laurel County23.8-0.1 pts
37Knox County23.7-0.1 pts
38Lincoln County23.7-0 pts
39Metcalfe County23.7-0 pts
40Whitley County23.6+0.2 pts
41Henry County23.5-0.1 pts
42Harrison County23.5+0.2 pts
43Butler County23.5-0 pts
44Powell County23.4-0.4 pts
45Lewis County23.40 pts
46Henderson County23.3+0.1 pts
47Breckinridge County23.3-0.3 pts
48Nicholas County23.3+0.3 pts
49Mason County23.3-0.4 pts
50McLean County23.3-0 pts
51Larue County23.2+0.2 pts
52Trimble County23.2-0.3 pts
53Washington County23.2-0.2 pts
54Webster County230 pts
55Bourbon County23-0.3 pts
56Magoffin County22.9-0 pts
57Casey County22.9-0.4 pts
58Crittenden County22.9+0.4 pts
59Woodford County22.9-0.1 pts
60Warren County22.8+0.1 pts
61Hopkins County22.80 pts
62Lawrence County22.70 pts
63Clark County22.7-0.2 pts
64Jackson County22.7-0.1 pts
65Pendleton County22.7-0.5 pts
66Pulaski County22.7-0.2 pts
67Monroe County22.60 pts
68Garrard County22.6+0.1 pts
69Carlisle County22.6+0.2 pts
70Jefferson County22.6-0.2 pts
71Johnson County22.5-0 pts
72Russell County22.4+0.2 pts
73Carter County22.40 pts
74Rockcastle County22.4+0.1 pts
75McCreary County22.4+0.1 pts
76Harlan County22.4-0.2 pts
77Greenup County22.3-0 pts
78Caldwell County22.2+0.2 pts
79Union County22.2-0.2 pts
80Wayne County22.2-0.4 pts
81Estill County22.1-0.1 pts
82Ballard County22.1-0.2 pts
83Mercer County22.1-0.4 pts
84Taylor County22-0.2 pts
85Floyd County22-0.2 pts
86Campbell County22-0.2 pts
87Trigg County21.9-0.3 pts
88Menifee County21.9-0.7 pts
89Breathitt County21.9-0.3 pts
90McCracken County21.90 pts
91Letcher County21.8+0.1 pts
92Leslie County21.7-0.1 pts
93Adair County21.7+0.1 pts
94Green County21.6-0.4 pts
95Clay County21.6+0.1 pts
96Bell County21.5-0.3 pts
97Cumberland County21.4-0.5 pts
98Fayette County21.4+0.1 pts
99Perry County21.4-0.3 pts
100Muhlenberg County21.4-0 pts
101Knott County21.3-0.1 pts
102Madison County21.3-0.1 pts
103Franklin County21.2-0.1 pts
104Boyd County21.2+0.2 pts
105Edmonson County21.2-0.2 pts
106Owsley County21.1+0.1 pts
107Pike County21-0.2 pts
108Martin County20.9-0.3 pts
109Hickman County20.7+0.2 pts
110Lee County20.5+0.1 pts
111Livingston County20.5+0.3 pts
112Boyle County20.5+0.2 pts
113Robertson County20.5-0.1 pts
114Marshall County20.4-0 pts
115Fulton County20.3+0.3 pts
116Morgan County20-0.1 pts
117Elliott County19.8+0.2 pts
118Rowan County18.90 pts
119Calloway County18.2+0.1 pts
120Lyon County14.5-0.4 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, 2014) [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, 2014. 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=2014. 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, 2014. 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=2014.

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, 2014 [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=2014 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_kentucky_by_2014,
  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, 2014}},
  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=2014. 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, 2014
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=2014
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/kentucky-counties?period=2014.
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  -
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Questions

Which county has the highest population under 18?

Boone County, with 27.5% in 2014, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Lyon County, with 14.5% in 2014.

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