Data / Rankings / Population under 18 / Counties in Alabama

Counties in Alabama by population under 18

Franklin County had the highest population under 18 of 67 counties in 2020, at 25.5%. Macon County had the lowest, at 17.1%. The median was 21.5% and the figure for Alabama was 22.1%. Source: the U.S. Census Bureau.

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Highest25.5Franklin County
Lowest17.1Macon County
Median21.567 counties
Alabama22.1History

Map of counties, 2020

Autauga County: 24 %Baldwin County: 21.3 %Barbour County: 20.3 %Bibb County: 21.2 %Blount County: 23 %Bullock County: 19.6 %Butler County: 22 %Calhoun County: 20.9 %Chambers County: 20.1 %Cherokee County: 19.3 %Chilton County: 23.6 %Choctaw County: 19.6 %Clarke County: 20.9 %Clay County: 20.3 %Cleburne County: 23.2 %Coffee County: 23.7 %Colbert County: 21.1 %Conecuh County: 20 %Coosa County: 17.1 %Covington County: 21.8 %Crenshaw County: 22.4 %Cullman County: 22.2 %Dale County: 22.9 %Dallas County: 22.9 %DeKalb County: 24.4 %Elmore County: 21.5 %Escambia County: 22.2 %Etowah County: 21.6 %Fayette County: 21.7 %Franklin County: 25.5 %Geneva County: 21.8 %Greene County: 21.7 %Hale County: 22.7 %Henry County: 20.6 %Houston County: 23 %Jackson County: 20.6 %Jefferson County: 22.1 %Lamar County: 21.1 %Lauderdale County: 19.8 %Lawrence County: 21.5 %Lee County: 21.4 %Limestone County: 22.7 %Lowndes County: 20.2 %Macon County: 17.1 %Madison County: 21.7 %Marengo County: 22.1 %Marion County: 20.7 %Marshall County: 25.2 %Mobile County: 23.3 %Monroe County: 21.1 %Montgomery County: 23 %Morgan County: 22.6 %Perry County: 20.8 %Pickens County: 19.7 %Pike County: 19 %Randolph County: 21.5 %Russell County: 24.4 %St. Clair County: 22.9 %Shelby County: 23.4 %Sumter County: 19.9 %Talladega County: 20.8 %Tallapoosa County: 20.1 %Tuscaloosa County: 20.4 %Walker County: 21.3 %Washington County: 21.6 %Wilcox County: 22.1 %Winston County: 20.3 %
  • Under 20
  • 20 to 21
  • 21 to 22
  • 22 to 23
  • 23 and over
%, 2020. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2020

Franklin County: 25.5 %Franklin County25.5Marshall County: 25.2 %Marshall County25.2Russell County: 24.4 %Russell County24.4DeKalb County: 24.4 %DeKalb County24.4Autauga County: 24 %Autauga County24Coffee County: 23.7 %Coffee County23.7Chilton County: 23.6 %Chilton County23.6Shelby County: 23.4 %Shelby County23.4Mobile County: 23.3 %Mobile County23.3Cleburne County: 23.2 %Cleburne County23.2Blount County: 23 %Blount County23Houston County: 23 %Houston County23Montgomery County: 23 %Montgomery County23St. Clair County: 22.9 %St. Clair County22.9Dale County: 22.9 %Dale County22.9Dallas County: 22.9 %Dallas County22.9Limestone County: 22.7 %Limestone County22.7Hale County: 22.7 %Hale County22.7Morgan County: 22.6 %Morgan County22.6Crenshaw County: 22.4 %Crenshaw County22.4Escambia County: 22.2 %Escambia County22.2Cullman County: 22.2 %Cullman County22.2Jefferson County: 22.1 %Jefferson County22.1Marengo County: 22.1 %Marengo County22.1Wilcox County: 22.1 %Wilcox County22.1Butler County: 22 %Butler County22Covington County: 21.8 %Covington County21.8Geneva County: 21.8 %Geneva County21.8Fayette County: 21.7 %Fayette County21.7Greene County: 21.7 %Greene County21.7Madison County: 21.7 %Madison County21.7Etowah County: 21.6 %Etowah County21.6Washington County: 21.6 %Washington County21.6Lawrence County: 21.5 %Lawrence County21.5Randolph County: 21.5 %Randolph County21.5Elmore County: 21.5 %Elmore County21.5Lee County: 21.4 %Lee County21.4Baldwin County: 21.3 %Baldwin County21.3Walker County: 21.3 %Walker County21.3Bibb County: 21.2 %Bibb County21.2Franklin County: 25.5 %Franklin County25.5Marshall County: 25.2 %Marshall County25.2Russell County: 24.4 %Russell County24.4DeKalb County: 24.4 %DeKalb County24.4Autauga County: 24 %Autauga County24Coffee County: 23.7 %Coffee County23.7Chilton County: 23.6 %Chilton County23.6Shelby County: 23.4 %Shelby County23.4Mobile County: 23.3 %Mobile County23.3Cleburne County: 23.2 %Cleburne County23.2Blount County: 23 %Blount County23Houston County: 23 %Houston County23Montgomery County: 23 %Montgomery County23St. Clair County: 22.9 %St. Clair County22.9Dale County: 22.9 %Dale County22.9Dallas County: 22.9 %Dallas County22.9Limestone County: 22.7 %Limestone County22.7Hale County: 22.7 %Hale County22.7Morgan County: 22.6 %Morgan County22.6Crenshaw County: 22.4 %Crenshaw County22.4Escambia County: 22.2 %Escambia County22.2Cullman County: 22.2 %Cullman County22.2Jefferson County: 22.1 %Jefferson County22.1Marengo County: 22.1 %Marengo County22.1Wilcox County: 22.1 %Wilcox County22.1Butler County: 22 %Butler County22Covington County: 21.8 %Covington County21.8Geneva County: 21.8 %Geneva County21.8Fayette County: 21.7 %Fayette County21.7Greene County: 21.7 %Greene County21.7Madison County: 21.7 %Madison County21.7Etowah County: 21.6 %Etowah County21.6Washington County: 21.6 %Washington County21.6Lawrence County: 21.5 %Lawrence County21.5Randolph County: 21.5 %Randolph County21.5Elmore County: 21.5 %Elmore County21.5Lee County: 21.4 %Lee County21.4Baldwin County: 21.3 %Baldwin County21.3Walker County: 21.3 %Walker County21.3Bibb County: 21.2 %Bibb County21.2
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2020 (%)Change on 2019
1Franklin County25.5+0.2 pts
2Marshall County25.2+0.5 pts
3Russell County24.4-0.1 pts
4DeKalb County24.4-0.2 pts
5Autauga County24-0.2 pts
6Coffee County23.7-0.1 pts
7Chilton County23.6-0.1 pts
8Shelby County23.4-0.3 pts
9Mobile County23.3+0.2 pts
10Cleburne County23.2+0.6 pts
11Blount County23-0.3 pts
12Houston County23-0 pts
13Montgomery County23+0.4 pts
14St. Clair County22.9-0.2 pts
15Dale County22.90 pts
16Dallas County22.9-0.3 pts
17Limestone County22.7-0.4 pts
18Hale County22.7+0.5 pts
19Morgan County22.6-0 pts
20Crenshaw County22.4+0.7 pts
21Escambia County22.2-0.2 pts
22Cullman County22.2-0.2 pts
23Jefferson County22.1+0.1 pts
24Marengo County22.1-0.2 pts
25Wilcox County22.1-0.6 pts
26Butler County22+0.1 pts
27Covington County21.8-0.1 pts
27Geneva County21.8-0.2 pts
29Fayette County21.7+0.2 pts
30Greene County21.7-0.3 pts
31Madison County21.7-0.1 pts
32Etowah County21.6+0.1 pts
33Washington County21.6-0.4 pts
34Lawrence County21.5-0.1 pts
35Randolph County21.5+0.1 pts
36Elmore County21.5-0.3 pts
37Lee County21.4-0.4 pts
38Baldwin County21.3-0.1 pts
39Walker County21.3+0.2 pts
40Bibb County21.2-0.3 pts
41Monroe County21.1-0.4 pts
42Colbert County21.1-0 pts
43Lamar County21.1+0.2 pts
44Calhoun County20.9+0.1 pts
45Clarke County20.90 pts
46Talladega County20.8-0.1 pts
47Perry County20.8-0.2 pts
48Marion County20.70 pts
49Henry County20.60 pts
50Jackson County20.6-0.1 pts
51Tuscaloosa County20.4-0.9 pts
52Clay County20.3-0.1 pts
53Winston County20.3-0.1 pts
54Barbour County20.3+0.1 pts
55Lowndes County20.2+0.1 pts
56Tallapoosa County20.1-0.2 pts
57Chambers County20.1-0.3 pts
58Conecuh County20-0.2 pts
59Sumter County19.9+0.2 pts
60Lauderdale County19.8-0.1 pts
61Pickens County19.7+0.3 pts
62Choctaw County19.6-0.4 pts
63Bullock County19.6+0.5 pts
64Cherokee County19.3-0.1 pts
65Pike County19+0.1 pts
66Coosa County17.1-0.1 pts
67Macon County17.1+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 Alabama by population under 18, 2020) [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, 2020. 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?period=2020. 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, 2020. 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?period=2020.

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, 2020 [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?period=2020 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_alabama_by_2020,
  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, 2020}},
  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?period=2020. 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, 2020
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?period=2020
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/alabama-counties?period=2020.
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?

Franklin County, with 25.5% in 2020, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Macon County, with 17.1% in 2020.

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