Counties in West Virginia by population under 18, 2025

Berkeley County had the highest population under 18 of 55 counties in 2025, at 22.8%. Gilmer County had the lowest, at 15.2%. The median was 19.4% and the figure for West Virginia was 19.5%. Source: the U.S. Census Bureau.

Highest22.8Berkeley County

Lowest15.2Gilmer County

Median19.455 counties

West Virginia19.5History

Map of counties, 2025

Under 18
18 to 19
19 to 20
20 and over

%, 2025. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2025

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

Full ranking

Rank	Counties	2025 (%)	Change on 2024
1	Berkeley County	22.8	-0.3 pts
2	Mingo County	21.5	+0.2 pts
3	Jackson County	21.5	-0.1 pts
4	Clay County	21.3	-0.5 pts
5	Lincoln County	21.1	-0.2 pts
6	Wetzel County	20.9	+0.4 pts
7	Mercer County	20.7	-0 pts
8	Harrison County	20.6	-0.3 pts
9	Wayne County	20.5	-0.3 pts
10	Barbour County	20.5	0 pts
11	Putnam County	20.4	-0.4 pts
12	Wirt County	20.4	-0.3 pts
13	Tyler County	20.4	0 pts
14	Lewis County	20.4	-0.2 pts
15	Mason County	20.4	-0.1 pts
16	Raleigh County	20.3	-0.1 pts
17	Monroe County	20.3	-0.1 pts
18	Mineral County	20.3	-0.1 pts
19	Jefferson County	20.3	-0.3 pts
20	Logan County	20.2	+0.1 pts
21	Wood County	20	-0.2 pts
22	Boone County	20	-0.4 pts
23	Upshur County	20	-0.2 pts
24	Fayette County	19.9	-0.3 pts
25	Wyoming County	19.8	-0.1 pts
26	Grant County	19.6	+0.1 pts
27	Calhoun County	19.6	+0.3 pts
28	Hardy County	19.4	-0.4 pts
29	Marion County	19.3	-0.2 pts
30	Ritchie County	19.1	-0.2 pts
31	Nicholas County	19	-0.2 pts
32	Cabell County	19	-0.2 pts
33	Kanawha County	18.9	-0.2 pts
34	Taylor County	18.8	-0.4 pts
35	Hampshire County	18.8	-0.1 pts
36	Greenbrier County	18.6	-0.2 pts
37	Webster County	18.6	-0.4 pts
38	Roane County	18.4	-0.4 pts
39	Marshall County	18.4	-0.2 pts
40	Ohio County	18.2	-0.3 pts
41	Randolph County	18.2	-0.1 pts
42	Preston County	18.1	-0.2 pts
43	Braxton County	17.9	-0.5 pts
44	Pleasants County	17.9	-0.1 pts
45	McDowell County	17.7	-0.1 pts
46	Pendleton County	17.6	-0.2 pts
47	Pocahontas County	17.6	+0.1 pts
48	Hancock County	17.5	-0.1 pts
49	Tucker County	17	-0.2 pts
50	Doddridge County	16.9	-0.1 pts
51	Morgan County	16.9	-0.1 pts
52	Summers County	16.5	-0.2 pts
53	Brooke County	16.2	-0.3 pts
54	Monongalia County	16	-0.1 pts
55	Gilmer County	15.2	-0 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, 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, Counties in West Virginia by population under 18, 2025. 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. 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, 2025. 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.

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, 2025 [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 (Accessed: 12 October 2026).

BibTeX

@misc{census_counties_in_west_virginia_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: Counties in West Virginia by population under 18, 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/rankings/population-under-18/west-virginia-counties. 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, 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/rankings/population-under-18/west-virginia-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/west-virginia-counties.
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?

Berkeley County, with 22.8% in 2025, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Gilmer County, with 15.2% in 2025.

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.