Counties in West Virginia by population under 18

Berkeley County had the highest population under 18 of 55 counties in 2023, at 23.4%. Gilmer County had the lowest, at 15.9%. The median was 19.6% and the figure for West Virginia was 19.8%. Source: the U.S. Census Bureau.

Highest23.4Berkeley County

Lowest15.9Gilmer County

Median19.655 counties

West Virginia19.8History

Map of counties, 2023

Under 18
18 to 19
19 to 20
20 to 21
21 and over

%, 2023. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2023

%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

Rank	Counties	2023 (%)	Change on 2022
1	Berkeley County	23.4	-0 pts
2	Clay County	22	-0.1 pts
3	Lincoln County	21.7	-0.2 pts
4	Jackson County	21.6	0 pts
5	Putnam County	21.5	-0.4 pts
6	Mingo County	21.3	0 pts
7	Harrison County	21	-0.1 pts
8	Wirt County	21	-0.6 pts
9	Wayne County	20.8	-0.2 pts
10	Barbour County	20.8	0 pts
11	Mercer County	20.8	0 pts
12	Jefferson County	20.7	-0.4 pts
13	Wetzel County	20.7	+0.3 pts
14	Raleigh County	20.7	-0.2 pts
15	Lewis County	20.7	-0.1 pts
16	Fayette County	20.5	-0.2 pts
17	Boone County	20.4	-0.1 pts
18	Wood County	20.4	-0.1 pts
19	Upshur County	20.4	-0.1 pts
20	Mineral County	20.3	-0.2 pts
21	Mason County	20.3	-0.2 pts
22	Monroe County	20.2	-0 pts
23	Logan County	20.2	+0.1 pts
24	Tyler County	20	-0.2 pts
25	Wyoming County	20	0 pts
26	Marion County	19.9	+0.1 pts
27	Hardy County	19.8	-0.2 pts
28	Grant County	19.6	+0.4 pts
29	Calhoun County	19.5	-0.1 pts
30	Ritchie County	19.4	-0.1 pts
31	Cabell County	19.4	+0.1 pts
32	Nicholas County	19.3	-0.2 pts
33	Taylor County	19.3	-0.3 pts
34	Webster County	19.3	-0.2 pts
35	Roane County	19.3	-0.5 pts
36	Kanawha County	19.2	-0.1 pts
37	Greenbrier County	19	-0.2 pts
38	Ohio County	18.9	-0.3 pts
39	Hampshire County	18.9	-0.2 pts
40	Marshall County	18.7	-0.2 pts
41	Braxton County	18.6	-0 pts
42	Preston County	18.4	-0.3 pts
43	Randolph County	18.4	-0.2 pts
44	Pleasants County	18.3	-0 pts
45	Pendleton County	17.9	-0.1 pts
46	Hancock County	17.9	-0.1 pts
47	McDowell County	17.8	-0.1 pts
48	Pocahontas County	17.5	+0.4 pts
49	Tucker County	17.3	+0.1 pts
50	Morgan County	17.2	-0.2 pts
51	Doddridge County	17	-0.5 pts
52	Brooke County	16.7	-0.5 pts
53	Summers County	16.7	-0.4 pts
54	Monongalia County	16.4	-0.2 pts
55	Gilmer County	15.9	-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 West Virginia by population under 18, 2023) [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 West Virginia by population under 18, 2023. 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/west-virginia-counties?period=2023. 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 West Virginia by population under 18, 2023. 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/west-virginia-counties?period=2023.

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 West Virginia by population under 18, 2023 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-under-18/west-virginia-counties?period=2023 (Accessed: 12 October 2026).

BibTeX

@misc{census_counties_in_west_virginia_2023,
  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 West Virginia by population under 18, 2023}},
  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/west-virginia-counties?period=2023. 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 West Virginia by population under 18, 2023
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/west-virginia-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/west-virginia-counties?period=2023.
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.

Embed code

<iframe src="https://invokely.ai/embed/rankings/population-under-18/west-virginia-counties?period=2023" width="760" height="500" title="Counties in West Virginia by population under 18, 2023, chart from Invokely" loading="lazy" style="border:0;width:100%;max-width:760px" referrerpolicy="strict-origin-when-cross-origin"></iframe>

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 West Virginia by population under 18 using official data, and cite the source.

rank_places {"indicator":"population_0_17_share","level":"province","within":"West Virginia","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population_0_17_share&level=province&within=West%20Virginia&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?

Berkeley County, with 23.4% in 2023, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Gilmer County, with 15.9% in 2023.

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.