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

Counties in Ohio by population aged 18 to 64

Athens County had the highest population aged 18 to 64 of 88 counties in 2021, at 68.2%. Monroe County had the lowest, at 54.8%. The median was 57.7% and the figure for Ohio was 59.6%. Source: the U.S. Census Bureau.

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Highest68.2Athens County
Lowest54.8Monroe County
Median57.788 counties
Ohio59.6History

Map of counties, 2021

Adams County: 56.6 %Allen County: 57.4 %Ashland County: 56.7 %Ashtabula County: 57.4 %Athens County: 68.2 %Auglaize County: 56.5 %Belmont County: 58.4 %Brown County: 57.7 %Butler County: 60.6 %Carroll County: 56.5 %Champaign County: 57.8 %Clark County: 57.1 %Clermont County: 59.3 %Clinton County: 59.3 %Columbiana County: 57.8 %Coshocton County: 55.6 %Crawford County: 56.5 %Cuyahoga County: 60.3 %Darke County: 55.2 %Defiance County: 56.5 %Delaware County: 59.2 %Erie County: 56.2 %Fairfield County: 58.9 %Fayette County: 57.1 %Franklin County: 63.9 %Fulton County: 56.5 %Gallia County: 56.4 %Geauga County: 54.9 %Greene County: 60.6 %Guernsey County: 57.2 %Hamilton County: 61 %Hancock County: 59.2 %Hardin County: 59.4 %Harrison County: 55 %Henry County: 56.8 %Highland County: 56.7 %Hocking County: 58.3 %Holmes County: 54.9 %Huron County: 57.8 %Jackson County: 57.7 %Jefferson County: 58.1 %Knox County: 57.2 %Lake County: 59.1 %Lawrence County: 57.8 %Licking County: 59.1 %Logan County: 57.7 %Lorain County: 58.3 %Lucas County: 59.8 %Madison County: 62.4 %Mahoning County: 57.5 %Marion County: 60.1 %Medina County: 58.8 %Meigs County: 57 %Mercer County: 55.2 %Miami County: 57.2 %Monroe County: 54.8 %Montgomery County: 59.4 %Morgan County: 56.6 %Morrow County: 58.3 %Muskingum County: 58.1 %Noble County: 63.9 %Ottawa County: 55.2 %Paulding County: 55.9 %Perry County: 57.9 %Pickaway County: 60.4 %Pike County: 57.2 %Portage County: 62.4 %Preble County: 56.7 %Putnam County: 55.9 %Richland County: 57.9 %Ross County: 60.6 %Sandusky County: 57.3 %Scioto County: 59 %Seneca County: 58.6 %Shelby County: 57.5 %Stark County: 58 %Summit County: 59.7 %Trumbull County: 57.4 %Tuscarawas County: 56.9 %Union County: 61.6 %Van Wert County: 56.5 %Vinton County: 58.9 %Warren County: 59.9 %Washington County: 58.1 %Wayne County: 56.8 %Williams County: 57.4 %Wood County: 61.8 %Wyandot County: 56.7 %
  • Under 57
  • 57 to 58
  • 58 to 59
  • 59 to 60
  • 60 and over
%, 2021. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2021

Athens County: 68.2 %Athens County68.2Noble County: 63.9 %Noble County63.9Franklin County: 63.9 %Franklin County63.9Madison County: 62.4 %Madison County62.4Portage County: 62.4 %Portage County62.4Wood County: 61.8 %Wood County61.8Union County: 61.6 %Union County61.6Hamilton County: 61 %Hamilton County61Butler County: 60.6 %Butler County60.6Greene County: 60.6 %Greene County60.6Ross County: 60.6 %Ross County60.6Pickaway County: 60.4 %Pickaway County60.4Cuyahoga County: 60.3 %Cuyahoga County60.3Marion County: 60.1 %Marion County60.1Warren County: 59.9 %Warren County59.9Lucas County: 59.8 %Lucas County59.8Summit County: 59.7 %Summit County59.7Montgomery County: 59.4 %Montgomery County59.4Hardin County: 59.4 %Hardin County59.4Clermont County: 59.3 %Clermont County59.3Clinton County: 59.3 %Clinton County59.3Delaware County: 59.2 %Delaware County59.2Hancock County: 59.2 %Hancock County59.2Licking County: 59.1 %Licking County59.1Lake County: 59.1 %Lake County59.1Scioto County: 59 %Scioto County59Fairfield County: 58.9 %Fairfield County58.9Vinton County: 58.9 %Vinton County58.9Medina County: 58.8 %Medina County58.8Seneca County: 58.6 %Seneca County58.6Belmont County: 58.4 %Belmont County58.4Lorain County: 58.3 %Lorain County58.3Hocking County: 58.3 %Hocking County58.3Morrow County: 58.3 %Morrow County58.3Muskingum County: 58.1 %Muskingum County58.1Washington County: 58.1 %Washington County58.1Jefferson County: 58.1 %Jefferson County58.1Stark County: 58 %Stark County58Richland County: 57.9 %Richland County57.9Perry County: 57.9 %Perry County57.9Athens County: 68.2 %Athens County68.2Noble County: 63.9 %Noble County63.9Franklin County: 63.9 %Franklin County63.9Madison County: 62.4 %Madison County62.4Portage County: 62.4 %Portage County62.4Wood County: 61.8 %Wood County61.8Union County: 61.6 %Union County61.6Hamilton County: 61 %Hamilton County61Butler County: 60.6 %Butler County60.6Greene County: 60.6 %Greene County60.6Ross County: 60.6 %Ross County60.6Pickaway County: 60.4 %Pickaway County60.4Cuyahoga County: 60.3 %Cuyahoga County60.3Marion County: 60.1 %Marion County60.1Warren County: 59.9 %Warren County59.9Lucas County: 59.8 %Lucas County59.8Summit County: 59.7 %Summit County59.7Montgomery County: 59.4 %Montgomery County59.4Hardin County: 59.4 %Hardin County59.4Clermont County: 59.3 %Clermont County59.3Clinton County: 59.3 %Clinton County59.3Delaware County: 59.2 %Delaware County59.2Hancock County: 59.2 %Hancock County59.2Licking County: 59.1 %Licking County59.1Lake County: 59.1 %Lake County59.1Scioto County: 59 %Scioto County59Fairfield County: 58.9 %Fairfield County58.9Vinton County: 58.9 %Vinton County58.9Medina County: 58.8 %Medina County58.8Seneca County: 58.6 %Seneca County58.6Belmont County: 58.4 %Belmont County58.4Lorain County: 58.3 %Lorain County58.3Hocking County: 58.3 %Hocking County58.3Morrow County: 58.3 %Morrow County58.3Muskingum County: 58.1 %Muskingum County58.1Washington County: 58.1 %Washington County58.1Jefferson County: 58.1 %Jefferson County58.1Stark County: 58 %Stark County58Richland County: 57.9 %Richland County57.9Perry County: 57.9 %Perry County57.9
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)Change on 2020
1Athens County68.2-1.6 pts
2Noble County63.9+0.1 pts
3Franklin County63.9-0.4 pts
4Madison County62.4-0 pts
5Portage County62.4-1.1 pts
6Wood County61.8-0.9 pts
7Union County61.6+0.1 pts
8Hamilton County61-0.2 pts
9Butler County60.6-0.5 pts
10Greene County60.6-0.3 pts
11Ross County60.6-0.4 pts
12Pickaway County60.4-0.4 pts
13Cuyahoga County60.3-0.4 pts
14Marion County60.1-0.1 pts
15Warren County59.9-0 pts
16Lucas County59.8-0.3 pts
17Summit County59.7-0.3 pts
18Montgomery County59.4-0.1 pts
19Hardin County59.4-0.2 pts
20Clermont County59.3-0.3 pts
21Clinton County59.3-0.3 pts
22Delaware County59.2+0.2 pts
23Hancock County59.2-0.1 pts
24Licking County59.1-0.3 pts
25Lake County59.1-0.3 pts
26Scioto County59-0.4 pts
27Fairfield County58.9-0 pts
28Vinton County58.9+0.1 pts
29Medina County58.8-0.1 pts
30Seneca County58.6-0.2 pts
31Belmont County58.4-0.3 pts
32Lorain County58.3-0.4 pts
33Hocking County58.3-0.3 pts
34Morrow County58.3-0.1 pts
35Muskingum County58.1-0.3 pts
36Washington County58.1-0.4 pts
37Jefferson County58.1-0.2 pts
38Stark County58-0.3 pts
39Richland County57.9-0.1 pts
40Perry County57.9-0.4 pts
41Lawrence County57.8-0.2 pts
42Champaign County57.8-0.1 pts
43Huron County57.8-0.1 pts
44Columbiana County57.8-0.3 pts
45Logan County57.7-0.3 pts
46Jackson County57.7-0 pts
47Brown County57.7-0.2 pts
48Mahoning County57.5-0.4 pts
49Shelby County57.5-0.2 pts
50Williams County57.4-0.2 pts
51Allen County57.4-0.2 pts
52Ashtabula County57.4-0.2 pts
53Trumbull County57.4-0.3 pts
54Sandusky County57.3-0.3 pts
55Guernsey County57.2-0.3 pts
56Pike County57.2-0.5 pts
57Knox County57.2-0.6 pts
58Miami County57.2-0.2 pts
59Clark County57.1-0.1 pts
60Fayette County57.1-0.2 pts
61Meigs County57-0.3 pts
62Tuscarawas County56.9-0 pts
63Wayne County56.8-0.5 pts
64Henry County56.8-0.2 pts
65Wyandot County56.7-0.2 pts
66Highland County56.7-0.3 pts
67Ashland County56.7-0.3 pts
68Preble County56.7-0.2 pts
69Adams County56.6-0.3 pts
70Morgan County56.6-0.3 pts
71Fulton County56.5-0.3 pts
72Crawford County56.5-0.2 pts
73Carroll County56.5-0.3 pts
74Van Wert County56.5-0.3 pts
75Defiance County56.5-0.3 pts
76Auglaize County56.5-0.2 pts
77Gallia County56.4-0.5 pts
78Erie County56.2-0.2 pts
79Putnam County55.9-0.4 pts
80Paulding County55.9-0.4 pts
81Coshocton County55.6-0.3 pts
82Mercer County55.2-0.6 pts
83Ottawa County55.2-0.3 pts
84Darke County55.2-0.2 pts
85Harrison County55-0.7 pts
86Geauga County54.9-0.3 pts
87Holmes County54.9-0 pts
88Monroe County54.8-0.3 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 Ohio by population aged 18 to 64, 2021) [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 Ohio by population aged 18 to 64, 2021. 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/ohio-counties?period=2021. 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 Ohio by population aged 18 to 64, 2021. 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/ohio-counties?period=2021.

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 Ohio by population aged 18 to 64, 2021 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-18-64/ohio-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_ohio_by_2021,
  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 Ohio by population aged 18 to 64, 2021}},
  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/ohio-counties?period=2021. 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 Ohio by population aged 18 to 64, 2021
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/ohio-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-18-64/ohio-counties?period=2021.
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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Rank Counties in Ohio by population aged 18 to 64 using official data, and cite the source.
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Questions

Which county has the highest population aged 18 to 64?

Athens County, with 68.2% in 2021, according to the U.S. Census Bureau.

Which county has the lowest population aged 18 to 64?

Monroe County, with 54.8% in 2021.

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 Ohio: more rankings