Data / Rankings / Population under 18 / Counties in Alabama

Counties in Alabama by population under 18, 2025

Marshall County had the highest population under 18 of 67 counties in 2025, at 25.6%. Macon County had the lowest, at 15.8%. The median was 21.2% and the figure for Alabama was 21.5%. Source: the U.S. Census Bureau.

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Highest25.6Marshall County
Lowest15.8Macon County
Median21.267 counties
Alabama21.5History

Map of counties, 2025

Autauga County: 23.3 %Baldwin County: 20.4 %Barbour County: 19.3 %Bibb County: 20.6 %Blount County: 22.6 %Bullock County: 18.9 %Butler County: 20.9 %Calhoun County: 20.8 %Chambers County: 20.5 %Cherokee County: 18.3 %Chilton County: 23.4 %Choctaw County: 18.7 %Clarke County: 21.3 %Clay County: 20.4 %Cleburne County: 22.8 %Coffee County: 23.5 %Colbert County: 21.6 %Conecuh County: 19.5 %Coosa County: 16.2 %Covington County: 22.3 %Crenshaw County: 22.7 %Cullman County: 21.9 %Dale County: 22.6 %Dallas County: 22.1 %DeKalb County: 23.5 %Elmore County: 20.6 %Escambia County: 22.2 %Etowah County: 21.7 %Fayette County: 21.3 %Franklin County: 25.3 %Geneva County: 21.2 %Greene County: 21.1 %Hale County: 23.8 %Henry County: 20.3 %Houston County: 22.3 %Jackson County: 20.9 %Jefferson County: 21.7 %Lamar County: 21.4 %Lauderdale County: 19 %Lawrence County: 21.5 %Lee County: 20.1 %Limestone County: 22.2 %Lowndes County: 19.9 %Macon County: 15.8 %Madison County: 21 %Marengo County: 21.4 %Marion County: 20.8 %Marshall County: 25.6 %Mobile County: 22.6 %Monroe County: 20.9 %Montgomery County: 22.9 %Morgan County: 22.5 %Perry County: 20.6 %Pickens County: 19.4 %Pike County: 19.3 %Randolph County: 21.2 %Russell County: 23.7 %St. Clair County: 21.9 %Shelby County: 21.6 %Sumter County: 19.1 %Talladega County: 20.2 %Tallapoosa County: 19.2 %Tuscaloosa County: 19.4 %Walker County: 22.5 %Washington County: 21.2 %Wilcox County: 20.5 %Winston County: 20.6 %
  • Under 19
  • 19 to 21
  • 21 to 22
  • 22 to 23
  • 23 and over
%, 2025. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2025

Marshall County: 25.6 %Marshall County25.6Franklin County: 25.3 %Franklin County25.3Hale County: 23.8 %Hale County23.8Russell County: 23.7 %Russell County23.7Coffee County: 23.5 %Coffee County23.5DeKalb County: 23.5 %DeKalb County23.5Chilton County: 23.4 %Chilton County23.4Autauga County: 23.3 %Autauga County23.3Montgomery County: 22.9 %Montgomery County22.9Cleburne County: 22.8 %Cleburne County22.8Crenshaw County: 22.7 %Crenshaw County22.7Blount County: 22.6 %Blount County22.6Dale County: 22.6 %Dale County22.6Mobile County: 22.6 %Mobile County22.6Morgan County: 22.5 %Morgan County22.5Walker County: 22.5 %Walker County22.5Covington County: 22.3 %Covington County22.3Houston County: 22.3 %Houston County22.3Limestone County: 22.2 %Limestone County22.2Escambia County: 22.2 %Escambia County22.2Dallas County: 22.1 %Dallas County22.1St. Clair County: 21.9 %St. Clair County21.9Cullman County: 21.9 %Cullman County21.9Jefferson County: 21.7 %Jefferson County21.7Etowah County: 21.7 %Etowah County21.7Shelby County: 21.6 %Shelby County21.6Colbert County: 21.6 %Colbert County21.6Lawrence County: 21.5 %Lawrence County21.5Lamar County: 21.4 %Lamar County21.4Marengo County: 21.4 %Marengo County21.4Clarke County: 21.3 %Clarke County21.3Fayette County: 21.3 %Fayette County21.3Geneva County: 21.2 %Geneva County21.2Washington County: 21.2 %Washington County21.2Randolph County: 21.2 %Randolph County21.2Greene County: 21.1 %Greene County21.1Madison County: 21 %Madison County21Butler County: 20.9 %Butler County20.9Monroe County: 20.9 %Monroe County20.9Jackson County: 20.9 %Jackson County20.9Marshall County: 25.6 %Marshall County25.6Franklin County: 25.3 %Franklin County25.3Hale County: 23.8 %Hale County23.8Russell County: 23.7 %Russell County23.7Coffee County: 23.5 %Coffee County23.5DeKalb County: 23.5 %DeKalb County23.5Chilton County: 23.4 %Chilton County23.4Autauga County: 23.3 %Autauga County23.3Montgomery County: 22.9 %Montgomery County22.9Cleburne County: 22.8 %Cleburne County22.8Crenshaw County: 22.7 %Crenshaw County22.7Blount County: 22.6 %Blount County22.6Dale County: 22.6 %Dale County22.6Mobile County: 22.6 %Mobile County22.6Morgan County: 22.5 %Morgan County22.5Walker County: 22.5 %Walker County22.5Covington County: 22.3 %Covington County22.3Houston County: 22.3 %Houston County22.3Limestone County: 22.2 %Limestone County22.2Escambia County: 22.2 %Escambia County22.2Dallas County: 22.1 %Dallas County22.1St. Clair County: 21.9 %St. Clair County21.9Cullman County: 21.9 %Cullman County21.9Jefferson County: 21.7 %Jefferson County21.7Etowah County: 21.7 %Etowah County21.7Shelby County: 21.6 %Shelby County21.6Colbert County: 21.6 %Colbert County21.6Lawrence County: 21.5 %Lawrence County21.5Lamar County: 21.4 %Lamar County21.4Marengo County: 21.4 %Marengo County21.4Clarke County: 21.3 %Clarke County21.3Fayette County: 21.3 %Fayette County21.3Geneva County: 21.2 %Geneva County21.2Washington County: 21.2 %Washington County21.2Randolph County: 21.2 %Randolph County21.2Greene County: 21.1 %Greene County21.1Madison County: 21 %Madison County21Butler County: 20.9 %Butler County20.9Monroe County: 20.9 %Monroe County20.9Jackson County: 20.9 %Jackson County20.9
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2025 (%)Change on 2024
1Marshall County25.6-0.1 pts
2Franklin County25.30 pts
3Hale County23.8+0.1 pts
4Russell County23.7-0.8 pts
5Coffee County23.5-0.2 pts
6DeKalb County23.5-0.3 pts
7Chilton County23.4-0.2 pts
8Autauga County23.3-0.3 pts
9Montgomery County22.9-0.2 pts
10Cleburne County22.8-0.4 pts
11Crenshaw County22.7+0.2 pts
12Blount County22.6-0.2 pts
13Dale County22.6-0.3 pts
14Mobile County22.6-0.2 pts
15Morgan County22.5-0 pts
16Walker County22.5+0.2 pts
17Covington County22.3-0 pts
18Houston County22.3-0.1 pts
19Limestone County22.2-0.1 pts
20Escambia County22.2-0 pts
21Dallas County22.1-0.1 pts
22St. Clair County21.9-0.3 pts
23Cullman County21.9-0.2 pts
24Jefferson County21.7-0.1 pts
25Etowah County21.7-0.1 pts
26Shelby County21.6-0.5 pts
27Colbert County21.60 pts
28Lawrence County21.5-0 pts
29Lamar County21.4-0.2 pts
30Marengo County21.4-0.2 pts
31Clarke County21.3-0 pts
32Fayette County21.3-0.2 pts
33Geneva County21.2-0.2 pts
34Washington County21.2-0.2 pts
35Randolph County21.2-0.3 pts
36Greene County21.1-0.2 pts
37Madison County21-0.1 pts
38Butler County20.9-0.4 pts
39Monroe County20.9-0.2 pts
40Jackson County20.9+0.1 pts
41Calhoun County20.8-0.1 pts
42Marion County20.8+0.1 pts
43Elmore County20.6-0.1 pts
43Perry County20.6-0.2 pts
45Bibb County20.6-0.1 pts
46Winston County20.6+0.1 pts
47Chambers County20.5+0.1 pts
48Wilcox County20.5-0.4 pts
49Clay County20.4-0.2 pts
50Baldwin County20.4-0.3 pts
51Henry County20.3-0.3 pts
52Talladega County20.2-0.1 pts
53Lee County20.1-0.4 pts
54Lowndes County19.9-0.3 pts
55Conecuh County19.5-0.4 pts
56Tuscaloosa County19.4-0.1 pts
57Pickens County19.4+0.2 pts
58Pike County19.30 pts
59Barbour County19.3-0.3 pts
60Tallapoosa County19.2-0.3 pts
61Sumter County19.1-0.9 pts
62Lauderdale County19-0.2 pts
63Bullock County18.9-0.4 pts
64Choctaw County18.7-0.1 pts
65Cherokee County18.3-0.3 pts
66Coosa County16.2-0 pts
67Macon County15.8-0.3 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 Alabama 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 Alabama 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/alabama-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 Alabama 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/alabama-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 Alabama 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/alabama-counties (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_alabama_by_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 Alabama 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/alabama-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 Alabama 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/alabama-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/alabama-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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Rank Counties in Alabama by population under 18 using official data, and cite the source.
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Questions

Which county has the highest population under 18?

Marshall County, with 25.6% in 2025, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Macon County, with 15.8% 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.

Population under 18: other rankings

Counties in Alabama: more rankings