Data / Population under 18 / Lake County

Population under 18 in Lake County

Population under 18 in Lake County was 18.2% in 2025, according to the U.S. Census Bureau. That is down 0.2 pts from 2024. That is the 85th highest of 88 counties in 2025.

202518.2%
Change on 2024-0.2 pts
Rank85th of 88Counties in Ohio ranked
Series high22.12010
Series low18.22025

Next release: Friday, 25 June 2027, estimated by Invokely from past publication dates (low confidence), not announced by the publisher. Release calendar

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Population under 18 in Lake County, 2010 to 2025

1819202122232010201320162019202220252010: 22.1 %2011: 21.8 %2012: 21.5 %2013: 21.2 %2014: 20.9 %2015: 20.7 %2016: 20.4 %2017: 20.2 %2018: 19.9 %2019: 19.7 %2020: 19.5 %2021: 19.2 %2022: 19 %2023: 18.7 %2024: 18.5 %2025: 18.2 %1819202122232010201620252010: 22.1 %2011: 21.8 %2012: 21.5 %2013: 21.2 %2014: 20.9 %2015: 20.7 %2016: 20.4 %2017: 20.2 %2018: 19.9 %2019: 19.7 %2020: 19.5 %2021: 19.2 %2022: 19 %2023: 18.7 %2024: 18.5 %2025: 18.2 %
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12, published 2026-06-25.
All 16 values
Period%
202518.2
202418.5
202318.7
202219
202119.2
202019.5
201919.7
201819.9
201720.2
201620.4
201520.7
201420.9
201321.2
201221.5
201121.8
201022.1

Compared with Ohio and United States

Place2025
Lake County18.2
Ohio21.3
United States21.1

Lake County compared with nearby places

Adams County: 23.7 %Allen County: 22.7 %Ashland County: 22 %Ashtabula County: 21.1 %Athens County: 14.6 %Auglaize County: 22.7 %Belmont County: 18.2 %Brown County: 22.4 %Butler County: 22.2 %Carroll County: 20.5 %Champaign County: 21.6 %Clark County: 21.9 %Clermont County: 21.2 %Clinton County: 21.7 %Columbiana County: 19.5 %Coshocton County: 23.8 %Crawford County: 21 %Cuyahoga County: 19.6 %Darke County: 23 %Defiance County: 22.3 %Delaware County: 23.7 %Erie County: 18.6 %Fairfield County: 23.4 %Fayette County: 22.4 %Franklin County: 22.5 %Fulton County: 22 %Gallia County: 23.1 %Geauga County: 21.4 %Greene County: 20.3 %Guernsey County: 22 %Hamilton County: 21.9 %Hancock County: 21.3 %Hardin County: 23 %Harrison County: 20.9 %Henry County: 22.5 %Highland County: 23.4 %Hocking County: 20.6 %Holmes County: 30.2 %Huron County: 22.3 %Jackson County: 23.4 %Jefferson County: 19.3 %Knox County: 22.3 %Lake County: 18.2 %Lawrence County: 20.9 %Licking County: 22.1 %Logan County: 21.8 %Lorain County: 20.7 %Lucas County: 21.7 %Madison County: 19.9 %Mahoning County: 19.6 %Marion County: 21.4 %Medina County: 20.4 %Meigs County: 20.2 %Mercer County: 25.7 %Miami County: 22.4 %Monroe County: 19.7 %Montgomery County: 21.5 %Morgan County: 20.8 %Morrow County: 21.8 %Muskingum County: 22.3 %Noble County: 18.6 %Ottawa County: 16.8 %Paulding County: 22.7 %Perry County: 23.2 %Pickaway County: 21.8 %Pike County: 23.4 %Portage County: 17.4 %Preble County: 21.5 %Putnam County: 24.9 %Richland County: 20.9 %Ross County: 20.3 %Sandusky County: 20.9 %Scioto County: 21.3 %Seneca County: 20.9 %Shelby County: 24 %Stark County: 20.9 %Summit County: 20 %Trumbull County: 19.7 %Tuscarawas County: 22.6 %Union County: 24 %Van Wert County: 22.9 %Vinton County: 22.1 %Warren County: 23 %Washington County: 19.2 %Wayne County: 23 %Williams County: 21.3 %Wood County: 19.6 %Wyandot County: 21.5 %
  • Under 20
  • 20 to 21
  • 21 to 22
  • 22 to 23
  • 23 and over
Population under 18, 2025, %. Lake County is outlined. Same source and period for every area shown. Source: U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Rankings

Definition

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.

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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 (Population under 18, Lake County, 2010 to 2025) [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, Population under 18, Lake County, 2010 to 2025. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/en/population-under-18/lake-county-ohio. 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. Population under 18, Lake County, 2010 to 2025. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/en/population-under-18/lake-county-ohio.

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, Population under 18, Lake County, 2010 to 2025 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/en/population-under-18/lake-county-ohio (Accessed: 12 October 2026).

BibTeX
@misc{census_population_under_18_lake_2025,
  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: Population under 18, Lake County, 2010 to 2025}},
  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/en/population-under-18/lake-county-ohio. 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: Population under 18, Lake County, 2010 to 2025
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/en/population-under-18/lake-county-ohio
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/population-under-18/lake-county-ohio.
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

What is the population under 18 in Lake County?

Population under 18 in Lake County was 18.2% in 2025, according to the U.S. Census Bureau. That is down 0.2 pts from 2024. That is the 85th highest of 88 counties in 2025.

Where does this figure come from?

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 by Invokely on 2026-10-12.

What was the highest population under 18 in Lake County?

22.1% in 2010, the highest value since 2010 in this series.

Related statistics for Lake County

All statistics for Lake County | Lake County in figures