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 2018, at 25.1%. Macon County had the lowest, at 16.8%. The median was 21.8% and the figure for Alabama was 22.3%. Source: the U.S. Census Bureau.

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Highest25.1Franklin County
Lowest16.8Macon County
Median21.867 counties
Alabama22.3History

Map of counties, 2018

Autauga County: 24.6 %Baldwin County: 21.7 %Barbour County: 20.6 %Bibb County: 21.6 %Blount County: 23.4 %Bullock County: 19.6 %Butler County: 22.2 %Calhoun County: 21.1 %Chambers County: 20.4 %Cherokee County: 19.6 %Chilton County: 23.7 %Choctaw County: 20.4 %Clarke County: 21.4 %Clay County: 20.5 %Cleburne County: 23 %Coffee County: 23.9 %Colbert County: 21.1 %Conecuh County: 20.5 %Coosa County: 17.4 %Covington County: 21.7 %Crenshaw County: 21.9 %Cullman County: 22.5 %Dale County: 23.1 %Dallas County: 23.7 %DeKalb County: 24.8 %Elmore County: 22.1 %Escambia County: 22.4 %Etowah County: 21.7 %Fayette County: 21.7 %Franklin County: 25.1 %Geneva County: 22 %Greene County: 22.8 %Hale County: 22.5 %Henry County: 20.8 %Houston County: 23.1 %Jackson County: 20.9 %Jefferson County: 22.1 %Lamar County: 21 %Lauderdale County: 20 %Lawrence County: 21.8 %Lee County: 22 %Limestone County: 23.4 %Lowndes County: 20.8 %Macon County: 16.8 %Madison County: 21.9 %Marengo County: 22.6 %Marion County: 20.8 %Marshall County: 24.6 %Mobile County: 23.2 %Monroe County: 21.9 %Montgomery County: 22.6 %Morgan County: 22.7 %Perry County: 21.7 %Pickens County: 19.8 %Pike County: 18.8 %Randolph County: 21.8 %Russell County: 24.6 %St. Clair County: 23.3 %Shelby County: 24 %Sumter County: 19.6 %Talladega County: 21.2 %Tallapoosa County: 20.5 %Tuscaloosa County: 21.4 %Walker County: 21.2 %Washington County: 22 %Wilcox County: 23.4 %Winston County: 20.6 %
  • Under 21
  • 21 to 22
  • 22 to 23
  • 23 and over
%, 2018. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2018

Franklin County: 25.1 %Franklin County25.1DeKalb County: 24.8 %DeKalb County24.8Russell County: 24.6 %Russell County24.6Marshall County: 24.6 %Marshall County24.6Autauga County: 24.6 %Autauga County24.6Shelby County: 24 %Shelby County24Coffee County: 23.9 %Coffee County23.9Chilton County: 23.7 %Chilton County23.7Dallas County: 23.7 %Dallas County23.7Limestone County: 23.4 %Limestone County23.4Blount County: 23.4 %Blount County23.4Wilcox County: 23.4 %Wilcox County23.4St. Clair County: 23.3 %St. Clair County23.3Mobile County: 23.2 %Mobile County23.2Houston County: 23.1 %Houston County23.1Dale County: 23.1 %Dale County23.1Cleburne County: 23 %Cleburne County23Greene County: 22.8 %Greene County22.8Morgan County: 22.7 %Morgan County22.7Montgomery County: 22.6 %Montgomery County22.6Marengo County: 22.6 %Marengo County22.6Hale County: 22.5 %Hale County22.5Cullman County: 22.5 %Cullman County22.5Escambia County: 22.4 %Escambia County22.4Butler County: 22.2 %Butler County22.2Jefferson County: 22.1 %Jefferson County22.1Elmore County: 22.1 %Elmore County22.1Geneva County: 22 %Geneva County22Washington County: 22 %Washington County22Lee County: 22 %Lee County22Madison County: 21.9 %Madison County21.9Monroe County: 21.9 %Monroe County21.9Crenshaw County: 21.9 %Crenshaw County21.9Randolph County: 21.8 %Randolph County21.8Lawrence County: 21.8 %Lawrence County21.8Fayette County: 21.7 %Fayette County21.7Perry County: 21.7 %Perry County21.7Covington County: 21.7 %Covington County21.7Etowah County: 21.7 %Etowah County21.7Baldwin County: 21.7 %Baldwin County21.7Franklin County: 25.1 %Franklin County25.1DeKalb County: 24.8 %DeKalb County24.8Russell County: 24.6 %Russell County24.6Marshall County: 24.6 %Marshall County24.6Autauga County: 24.6 %Autauga County24.6Shelby County: 24 %Shelby County24Coffee County: 23.9 %Coffee County23.9Chilton County: 23.7 %Chilton County23.7Dallas County: 23.7 %Dallas County23.7Limestone County: 23.4 %Limestone County23.4Blount County: 23.4 %Blount County23.4Wilcox County: 23.4 %Wilcox County23.4St. Clair County: 23.3 %St. Clair County23.3Mobile County: 23.2 %Mobile County23.2Houston County: 23.1 %Houston County23.1Dale County: 23.1 %Dale County23.1Cleburne County: 23 %Cleburne County23Greene County: 22.8 %Greene County22.8Morgan County: 22.7 %Morgan County22.7Montgomery County: 22.6 %Montgomery County22.6Marengo County: 22.6 %Marengo County22.6Hale County: 22.5 %Hale County22.5Cullman County: 22.5 %Cullman County22.5Escambia County: 22.4 %Escambia County22.4Butler County: 22.2 %Butler County22.2Jefferson County: 22.1 %Jefferson County22.1Elmore County: 22.1 %Elmore County22.1Geneva County: 22 %Geneva County22Washington County: 22 %Washington County22Lee County: 22 %Lee County22Madison County: 21.9 %Madison County21.9Monroe County: 21.9 %Monroe County21.9Crenshaw County: 21.9 %Crenshaw County21.9Randolph County: 21.8 %Randolph County21.8Lawrence County: 21.8 %Lawrence County21.8Fayette County: 21.7 %Fayette County21.7Perry County: 21.7 %Perry County21.7Covington County: 21.7 %Covington County21.7Etowah County: 21.7 %Etowah County21.7Baldwin County: 21.7 %Baldwin County21.7
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2018 (%)Change on 2017
1Franklin County25.10 pts
2DeKalb County24.8-0.2 pts
3Russell County24.6-0.2 pts
4Marshall County24.6-0 pts
5Autauga County24.6-0.1 pts
6Shelby County24-0.3 pts
7Coffee County23.9-0.1 pts
8Chilton County23.7-0.3 pts
9Dallas County23.7-0.4 pts
10Limestone County23.4-0.1 pts
11Blount County23.4-0.2 pts
12Wilcox County23.4-0.3 pts
13St. Clair County23.3-0.2 pts
14Mobile County23.2-0.2 pts
15Houston County23.1-0.1 pts
16Dale County23.1-0.1 pts
17Cleburne County23+0.1 pts
18Greene County22.8+0.7 pts
19Morgan County22.7-0.1 pts
20Montgomery County22.6-0.3 pts
21Marengo County22.6-0.1 pts
22Hale County22.5-0.1 pts
23Cullman County22.5-0 pts
24Escambia County22.4+0.1 pts
25Butler County22.2-0.4 pts
26Jefferson County22.1-0.2 pts
27Elmore County22.10 pts
28Geneva County22-0.2 pts
29Washington County22-0.4 pts
30Lee County22+0.1 pts
31Madison County21.9-0.2 pts
32Monroe County21.9-0.4 pts
33Crenshaw County21.9-0.4 pts
34Randolph County21.8-0.2 pts
35Lawrence County21.80 pts
36Fayette County21.7+0.1 pts
37Perry County21.7-0 pts
38Covington County21.7-0 pts
39Etowah County21.7-0.1 pts
40Baldwin County21.7-0.2 pts
41Bibb County21.60 pts
42Clarke County21.4-0.1 pts
43Tuscaloosa County21.4-0 pts
44Walker County21.2-0.1 pts
45Talladega County21.2-0.2 pts
46Colbert County21.1-0.1 pts
47Calhoun County21.1-0.3 pts
48Lamar County21-0.3 pts
49Jackson County20.9-0.3 pts
50Lowndes County20.8-0.2 pts
51Henry County20.8-0.1 pts
52Marion County20.8-0.1 pts
53Winston County20.6-0.2 pts
54Barbour County20.6-0 pts
55Tallapoosa County20.5-0.3 pts
56Conecuh County20.5-0.2 pts
57Clay County20.5-0.2 pts
58Chambers County20.4-0.4 pts
59Choctaw County20.4+0.1 pts
60Lauderdale County20-0.2 pts
61Pickens County19.8-0.4 pts
62Sumter County19.6-0 pts
63Cherokee County19.6-0.5 pts
64Bullock County19.6+0.1 pts
65Pike County18.8-0.1 pts
66Coosa County17.4+0.4 pts
67Macon County16.8-0.2 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, 2018) [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, 2018. 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=2018. 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, 2018. 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=2018.

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, 2018 [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=2018 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_alabama_by_2018,
  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, 2018}},
  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=2018. 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, 2018
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=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/alabama-counties?period=2018.
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 25.1% in 2018, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Macon County, with 16.8% in 2018.

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