Data / Rankings / Population under 18 / Counties in Ohio

Counties in Ohio by population under 18

Holmes County had the highest population under 18 of 88 counties in 2014, at 33.3%. Athens County had the lowest, at 16%. The median was 23.3% and the figure for Ohio was 22.8%. Source: the U.S. Census Bureau.

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Highest33.3Holmes County
Lowest16Athens County
Median23.388 counties
Ohio22.8History

Map of counties, 2014

Adams County: 24.5 %Allen County: 23.5 %Ashland County: 23.4 %Ashtabula County: 22.5 %Athens County: 16 %Auglaize County: 24.3 %Belmont County: 19.4 %Brown County: 23.5 %Butler County: 24.3 %Carroll County: 21.7 %Champaign County: 23.5 %Clark County: 22.9 %Clermont County: 24.4 %Clinton County: 23.8 %Columbiana County: 20.9 %Coshocton County: 23.8 %Crawford County: 21.8 %Cuyahoga County: 21.4 %Darke County: 24.3 %Defiance County: 23.8 %Delaware County: 28.2 %Erie County: 20.9 %Fairfield County: 24.8 %Fayette County: 23.9 %Franklin County: 23.5 %Fulton County: 24.4 %Gallia County: 23.2 %Geauga County: 24.1 %Greene County: 21 %Guernsey County: 22.7 %Hamilton County: 23.1 %Hancock County: 22.8 %Hardin County: 23.3 %Harrison County: 21.6 %Henry County: 24.1 %Highland County: 24.5 %Hocking County: 23.3 %Holmes County: 33.3 %Huron County: 24.6 %Jackson County: 24.3 %Jefferson County: 19.6 %Knox County: 23.3 %Lake County: 20.9 %Lawrence County: 22.6 %Licking County: 23.7 %Logan County: 23.9 %Lorain County: 22.8 %Lucas County: 23 %Madison County: 21.5 %Mahoning County: 20.4 %Marion County: 21 %Medina County: 23.7 %Meigs County: 22.1 %Mercer County: 25.5 %Miami County: 23.5 %Monroe County: 21.1 %Montgomery County: 22.4 %Morgan County: 22 %Morrow County: 24.5 %Muskingum County: 23.3 %Noble County: 18.4 %Ottawa County: 19.6 %Paulding County: 24.2 %Perry County: 24.5 %Pickaway County: 22.6 %Pike County: 24.1 %Portage County: 19.6 %Preble County: 23.5 %Putnam County: 25.7 %Richland County: 21.8 %Ross County: 21.7 %Sandusky County: 23.3 %Scioto County: 22 %Seneca County: 22.5 %Shelby County: 26 %Stark County: 22 %Summit County: 21.7 %Trumbull County: 20.9 %Tuscarawas County: 22.9 %Union County: 26.1 %Van Wert County: 23.9 %Vinton County: 23.3 %Warren County: 26.3 %Washington County: 20.3 %Wayne County: 24.6 %Williams County: 23.1 %Wood County: 20.9 %Wyandot County: 23.5 %
  • Under 21
  • 21 to 22
  • 22 to 23
  • 23 to 24
  • 24 and over
%, 2014. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2014

Holmes County: 33.3 %Holmes County33.3Delaware County: 28.2 %Delaware County28.2Warren County: 26.3 %Warren County26.3Union County: 26.1 %Union County26.1Shelby County: 26 %Shelby County26Putnam County: 25.7 %Putnam County25.7Mercer County: 25.5 %Mercer County25.5Fairfield County: 24.8 %Fairfield County24.8Huron County: 24.6 %Huron County24.6Wayne County: 24.6 %Wayne County24.6Highland County: 24.5 %Highland County24.5Perry County: 24.5 %Perry County24.5Adams County: 24.5 %Adams County24.5Morrow County: 24.5 %Morrow County24.5Fulton County: 24.4 %Fulton County24.4Clermont County: 24.4 %Clermont County24.4Auglaize County: 24.3 %Auglaize County24.3Butler County: 24.3 %Butler County24.3Jackson County: 24.3 %Jackson County24.3Darke County: 24.3 %Darke County24.3Paulding County: 24.2 %Paulding County24.2Geauga County: 24.1 %Geauga County24.1Henry County: 24.1 %Henry County24.1Pike County: 24.1 %Pike County24.1Fayette County: 23.9 %Fayette County23.9Van Wert County: 23.9 %Van Wert County23.9Logan County: 23.9 %Logan County23.9Coshocton County: 23.8 %Coshocton County23.8Defiance County: 23.8 %Defiance County23.8Clinton County: 23.8 %Clinton County23.8Licking County: 23.7 %Licking County23.7Medina County: 23.7 %Medina County23.7Brown County: 23.5 %Brown County23.5Allen County: 23.5 %Allen County23.5Champaign County: 23.5 %Champaign County23.5Franklin County: 23.5 %Franklin County23.5Wyandot County: 23.5 %Wyandot County23.5Miami County: 23.5 %Miami County23.5Preble County: 23.5 %Preble County23.5Ashland County: 23.4 %Ashland County23.4Holmes County: 33.3 %Holmes County33.3Delaware County: 28.2 %Delaware County28.2Warren County: 26.3 %Warren County26.3Union County: 26.1 %Union County26.1Shelby County: 26 %Shelby County26Putnam County: 25.7 %Putnam County25.7Mercer County: 25.5 %Mercer County25.5Fairfield County: 24.8 %Fairfield County24.8Huron County: 24.6 %Huron County24.6Wayne County: 24.6 %Wayne County24.6Highland County: 24.5 %Highland County24.5Perry County: 24.5 %Perry County24.5Adams County: 24.5 %Adams County24.5Morrow County: 24.5 %Morrow County24.5Fulton County: 24.4 %Fulton County24.4Clermont County: 24.4 %Clermont County24.4Auglaize County: 24.3 %Auglaize County24.3Butler County: 24.3 %Butler County24.3Jackson County: 24.3 %Jackson County24.3Darke County: 24.3 %Darke County24.3Paulding County: 24.2 %Paulding County24.2Geauga County: 24.1 %Geauga County24.1Henry County: 24.1 %Henry County24.1Pike County: 24.1 %Pike County24.1Fayette County: 23.9 %Fayette County23.9Van Wert County: 23.9 %Van Wert County23.9Logan County: 23.9 %Logan County23.9Coshocton County: 23.8 %Coshocton County23.8Defiance County: 23.8 %Defiance County23.8Clinton County: 23.8 %Clinton County23.8Licking County: 23.7 %Licking County23.7Medina County: 23.7 %Medina County23.7Brown County: 23.5 %Brown County23.5Allen County: 23.5 %Allen County23.5Champaign County: 23.5 %Champaign County23.5Franklin County: 23.5 %Franklin County23.5Wyandot County: 23.5 %Wyandot County23.5Miami County: 23.5 %Miami County23.5Preble County: 23.5 %Preble County23.5Ashland County: 23.4 %Ashland County23.4
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2014 (%)Change on 2013
1Holmes County33.3-0.4 pts
2Delaware County28.2-0.2 pts
3Warren County26.3-0.2 pts
4Union County26.1-0.4 pts
5Shelby County26-0.5 pts
6Putnam County25.70 pts
7Mercer County25.5-0.1 pts
8Fairfield County24.8-0.2 pts
9Huron County24.6-0.4 pts
10Wayne County24.6-0.1 pts
11Highland County24.5-0.3 pts
12Perry County24.5-0.3 pts
13Adams County24.5+0.1 pts
14Morrow County24.5-0.4 pts
15Fulton County24.4-0.1 pts
16Clermont County24.4-0.3 pts
17Auglaize County24.3-0.2 pts
18Butler County24.3-0.1 pts
19Jackson County24.30 pts
20Darke County24.3-0.2 pts
21Paulding County24.2-0.1 pts
22Geauga County24.1-0.4 pts
23Henry County24.1-0.3 pts
24Pike County24.1-0.1 pts
25Fayette County23.9+0.1 pts
26Van Wert County23.9-0 pts
27Logan County23.9-0.2 pts
28Coshocton County23.8+0.1 pts
29Defiance County23.8-0.3 pts
30Clinton County23.8-0.3 pts
31Licking County23.7-0.2 pts
32Medina County23.7-0.3 pts
33Brown County23.5-0.2 pts
34Allen County23.5-0 pts
35Champaign County23.5-0.4 pts
36Franklin County23.5-0.1 pts
37Wyandot County23.5-0.4 pts
38Miami County23.50 pts
39Preble County23.5-0 pts
40Ashland County23.4+0.1 pts
41Muskingum County23.3-0 pts
42Hardin County23.3+0.1 pts
43Vinton County23.30 pts
44Hocking County23.3-0.2 pts
45Sandusky County23.3-0.2 pts
46Knox County23.3-0.2 pts
47Gallia County23.2-0.1 pts
48Williams County23.1-0.2 pts
49Hamilton County23.1-0.1 pts
50Lucas County23-0.1 pts
51Tuscarawas County22.9-0.1 pts
52Clark County22.9-0.1 pts
53Lorain County22.8-0.2 pts
54Hancock County22.80 pts
55Guernsey County22.7-0.1 pts
56Pickaway County22.6-0.3 pts
57Lawrence County22.6-0.2 pts
58Seneca County22.5-0.2 pts
59Ashtabula County22.5-0.2 pts
60Montgomery County22.4-0.1 pts
61Meigs County22.1-0.4 pts
62Stark County22-0.1 pts
63Scioto County22-0 pts
64Morgan County22-0.5 pts
65Crawford County21.8-0.3 pts
66Richland County21.8-0.1 pts
67Ross County21.7-0.3 pts
68Summit County21.7-0.2 pts
69Carroll County21.7-0.3 pts
70Harrison County21.6+0.1 pts
71Madison County21.5-0.1 pts
72Cuyahoga County21.4-0.2 pts
73Monroe County21.1-0 pts
74Marion County21-0 pts
75Greene County21-0.1 pts
76Erie County20.9-0.2 pts
77Lake County20.9-0.3 pts
78Wood County20.90 pts
79Columbiana County20.9-0.1 pts
80Trumbull County20.9-0.3 pts
81Mahoning County20.4-0.2 pts
82Washington County20.3-0.1 pts
83Jefferson County19.6-0 pts
84Ottawa County19.6-0.3 pts
85Portage County19.6-0.2 pts
86Belmont County19.40 pts
87Noble County18.4-0.1 pts
88Athens County16+0.1 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 Ohio 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 Ohio 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/ohio-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 Ohio 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/ohio-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 Ohio 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/ohio-counties?period=2014 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_ohio_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 Ohio 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/ohio-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 Ohio 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/ohio-counties?period=2014
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/ohio-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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Rank Counties in Ohio by population under 18 using official data, and cite the source.
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Questions

Which county has the highest population under 18?

Holmes County, with 33.3% in 2014, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Athens County, with 16% 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 Ohio: more rankings