Data / Rankings / Population under 18 / Counties in Louisiana

Counties in Louisiana by population under 18

St. Bernard Parish had the highest population under 18 of 64 counties in 2024, at 26.1%. West Feliciana Parish had the lowest, at 15.8%. The median was 23% and the figure for Louisiana was 23%. Source: the U.S. Census Bureau.

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Highest26.1St. Bernard Parish
Lowest15.8West Feliciana Parish
Median2364 counties
Louisiana23History

Map of counties, 2024

Acadia Parish: 25.7 %Allen Parish: 22.5 %Ascension Parish: 25.9 %Assumption Parish: 19.6 %Avoyelles Parish: 23.3 %Beauregard Parish: 25.2 %Bienville Parish: 22.5 %Bossier Parish: 25 %Caddo Parish: 22.7 %Calcasieu Parish: 24 %Caldwell Parish: 22.6 %Cameron Parish: 22.8 %Catahoula Parish: 21.1 %Claiborne Parish: 18.3 %Concordia Parish: 23.1 %De Soto Parish: 23.7 %East Baton Rouge Parish: 22.1 %East Carroll Parish: 18.6 %East Feliciana Parish: 17.1 %Evangeline Parish: 24.2 %Franklin Parish: 23.9 %Grant Parish: 20.3 %Iberia Parish: 24 %Iberville Parish: 20.4 %Jackson Parish: 18.9 %Jefferson Parish: 22 %Jefferson Davis Parish: 24.8 %Lafayette Parish: 24.1 %Lafourche Parish: 22.8 %LaSalle Parish: 21.5 %Lincoln Parish: 19.8 %Livingston Parish: 25.4 %Madison Parish: 23.9 %Morehouse Parish: 21.5 %Natchitoches Parish: 21.5 %Orleans Parish: 19.8 %Ouachita Parish: 24.1 %Plaquemines Parish: 23.8 %Pointe Coupee Parish: 21.5 %Rapides Parish: 24.2 %Red River Parish: 24.1 %Richland Parish: 23.3 %Sabine Parish: 23 %St. Bernard Parish: 26.1 %St. Charles Parish: 23.6 %St. Helena Parish: 19.9 %St. James Parish: 22.1 %St. John the Baptist Parish: 23.2 %St. Landry Parish: 25.6 %St. Martin Parish: 23.9 %St. Mary Parish: 24.1 %St. Tammany Parish: 22.9 %Tangipahoa Parish: 24.2 %Tensas Parish: 19.6 %Terrebonne Parish: 23.8 %Union Parish: 21.1 %Vermilion Parish: 25 %Vernon Parish: 25.4 %Washington Parish: 23.2 %Webster Parish: 22 %West Baton Rouge Parish: 24.1 %West Carroll Parish: 22.3 %West Feliciana Parish: 15.8 %Winn Parish: 16.9 %
  • Under 20
  • 20 to 22
  • 22 to 23
  • 23 to 24
  • 24 and over
%, 2024. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2024

St. Bernard Parish: 26.1 %St. Bernard Parish26.1Ascension Parish: 25.9 %Ascension Parish25.9Acadia Parish: 25.7 %Acadia Parish25.7St. Landry Parish: 25.6 %St. Landry Parish25.6Vernon Parish: 25.4 %Vernon Parish25.4Livingston Parish: 25.4 %Livingston Parish25.4Beauregard Parish: 25.2 %Beauregard Parish25.2Vermilion Parish: 25 %Vermilion Parish25Bossier Parish: 25 %Bossier Parish25Jefferson Davis Parish: 24.8 %Jefferson Davis Parish24.8Tangipahoa Parish: 24.2 %Tangipahoa Parish24.2Rapides Parish: 24.2 %Rapides Parish24.2Evangeline Parish: 24.2 %Evangeline Parish24.2West Baton Rouge Parish: 24.1 %West Baton Rouge Parish24.1Lafayette Parish: 24.1 %Lafayette Parish24.1Ouachita Parish: 24.1 %Ouachita Parish24.1St. Mary Parish: 24.1 %St. Mary Parish24.1Red River Parish: 24.1 %Red River Parish24.1Iberia Parish: 24 %Iberia Parish24Calcasieu Parish: 24 %Calcasieu Parish24Madison Parish: 23.9 %Madison Parish23.9St. Martin Parish: 23.9 %St. Martin Parish23.9Franklin Parish: 23.9 %Franklin Parish23.9Plaquemines Parish: 23.8 %Plaquemines Parish23.8Terrebonne Parish: 23.8 %Terrebonne Parish23.8De Soto Parish: 23.7 %De Soto Parish23.7St. Charles Parish: 23.6 %St. Charles Parish23.6Avoyelles Parish: 23.3 %Avoyelles Parish23.3Richland Parish: 23.3 %Richland Parish23.3Washington Parish: 23.2 %Washington Parish23.2St. John the Baptist Parish: 23.2 %St. John the Baptist Parish23.2Concordia Parish: 23.1 %Concordia Parish23.1Sabine Parish: 23 %Sabine Parish23St. Tammany Parish: 22.9 %St. Tammany Parish22.9Lafourche Parish: 22.8 %Lafourche Parish22.8Cameron Parish: 22.8 %Cameron Parish22.8Caddo Parish: 22.7 %Caddo Parish22.7Caldwell Parish: 22.6 %Caldwell Parish22.6Allen Parish: 22.5 %Allen Parish22.5Bienville Parish: 22.5 %Bienville Parish22.5St. Bernard Parish: 26.1 %St. Bernard Parish26.1Ascension Parish: 25.9 %Ascension Parish25.9Acadia Parish: 25.7 %Acadia Parish25.7St. Landry Parish: 25.6 %St. Landry Parish25.6Vernon Parish: 25.4 %Vernon Parish25.4Livingston Parish: 25.4 %Livingston Parish25.4Beauregard Parish: 25.2 %Beauregard Parish25.2Vermilion Parish: 25 %Vermilion Parish25Bossier Parish: 25 %Bossier Parish25Jefferson Davis Parish: 24.8 %Jefferson Davis Parish24.8Tangipahoa Parish: 24.2 %Tangipahoa Parish24.2Rapides Parish: 24.2 %Rapides Parish24.2Evangeline Parish: 24.2 %Evangeline Parish24.2West Baton Rouge Parish: 24.1 %West Baton Rouge Parish24.1Lafayette Parish: 24.1 %Lafayette Parish24.1Ouachita Parish: 24.1 %Ouachita Parish24.1St. Mary Parish: 24.1 %St. Mary Parish24.1Red River Parish: 24.1 %Red River Parish24.1Iberia Parish: 24 %Iberia Parish24Calcasieu Parish: 24 %Calcasieu Parish24Madison Parish: 23.9 %Madison Parish23.9St. Martin Parish: 23.9 %St. Martin Parish23.9Franklin Parish: 23.9 %Franklin Parish23.9Plaquemines Parish: 23.8 %Plaquemines Parish23.8Terrebonne Parish: 23.8 %Terrebonne Parish23.8De Soto Parish: 23.7 %De Soto Parish23.7St. Charles Parish: 23.6 %St. Charles Parish23.6Avoyelles Parish: 23.3 %Avoyelles Parish23.3Richland Parish: 23.3 %Richland Parish23.3Washington Parish: 23.2 %Washington Parish23.2St. John the Baptist Parish: 23.2 %St. John the Baptist Parish23.2Concordia Parish: 23.1 %Concordia Parish23.1Sabine Parish: 23 %Sabine Parish23St. Tammany Parish: 22.9 %St. Tammany Parish22.9Lafourche Parish: 22.8 %Lafourche Parish22.8Cameron Parish: 22.8 %Cameron Parish22.8Caddo Parish: 22.7 %Caddo Parish22.7Caldwell Parish: 22.6 %Caldwell Parish22.6Allen Parish: 22.5 %Allen Parish22.5Bienville Parish: 22.5 %Bienville Parish22.5
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2024 (%)Change on 2023
1St. Bernard Parish26.1-0.5 pts
2Ascension Parish25.9-0.4 pts
3Acadia Parish25.7-0 pts
4St. Landry Parish25.6-0.1 pts
5Vernon Parish25.4-0.1 pts
6Livingston Parish25.4-0.4 pts
7Beauregard Parish25.2-0.2 pts
8Vermilion Parish25-0.2 pts
9Bossier Parish25-0.2 pts
10Jefferson Davis Parish24.8-0.2 pts
11Tangipahoa Parish24.2-0.1 pts
12Rapides Parish24.2-0.1 pts
13Evangeline Parish24.2-0.3 pts
14West Baton Rouge Parish24.1-0.2 pts
15Lafayette Parish24.1-0.1 pts
16Ouachita Parish24.1-0.3 pts
16St. Mary Parish24.10 pts
18Red River Parish24.1-0.1 pts
19Iberia Parish24-0.2 pts
20Calcasieu Parish24-0.1 pts
21Madison Parish23.9-0.3 pts
22St. Martin Parish23.9+0.1 pts
23Franklin Parish23.9-0.4 pts
24Plaquemines Parish23.8-0.7 pts
25Terrebonne Parish23.8-0.3 pts
26De Soto Parish23.7-0.4 pts
27St. Charles Parish23.6-0.4 pts
28Avoyelles Parish23.3-0.1 pts
29Richland Parish23.3-0.3 pts
30Washington Parish23.2-0.1 pts
31St. John the Baptist Parish23.2-0.2 pts
32Concordia Parish23.1-0.4 pts
33Sabine Parish23-0.3 pts
34St. Tammany Parish22.9-0.3 pts
35Lafourche Parish22.8-0.1 pts
36Cameron Parish22.8-0.6 pts
37Caddo Parish22.7-0.1 pts
38Caldwell Parish22.6+0.5 pts
39Allen Parish22.5-0.1 pts
40Bienville Parish22.5-0.1 pts
41West Carroll Parish22.3-0 pts
42St. James Parish22.1-0.3 pts
43East Baton Rouge Parish22.1-0 pts
44Webster Parish22-0.1 pts
45Jefferson Parish220 pts
46Morehouse Parish21.5-0 pts
47Natchitoches Parish21.5-0 pts
48LaSalle Parish21.5-0.2 pts
49Pointe Coupee Parish21.5-0.1 pts
50Union Parish21.1+0.1 pts
51Catahoula Parish21.1-0 pts
52Iberville Parish20.4-0.2 pts
53Grant Parish20.3-0.2 pts
54St. Helena Parish19.9-0.7 pts
55Lincoln Parish19.8-0.1 pts
56Orleans Parish19.8-0 pts
57Assumption Parish19.6-0.3 pts
58Tensas Parish19.6+0.4 pts
59Jackson Parish18.9-1.1 pts
60East Carroll Parish18.6-0 pts
61Claiborne Parish18.3-0.2 pts
62East Feliciana Parish17.1-0.2 pts
63Winn Parish16.9-1.9 pts
64West Feliciana Parish15.8-0.4 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 Louisiana by population under 18, 2024) [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 Louisiana by population under 18, 2024. 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/louisiana-counties?period=2024. 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 Louisiana by population under 18, 2024. 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/louisiana-counties?period=2024.

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 Louisiana by population under 18, 2024 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-under-18/louisiana-counties?period=2024 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_louisiana_by_2024,
  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 Louisiana by population under 18, 2024}},
  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/louisiana-counties?period=2024. 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 Louisiana by population under 18, 2024
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/louisiana-counties?period=2024
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/louisiana-counties?period=2024.
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?

St. Bernard Parish, with 26.1% in 2024, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

West Feliciana Parish, with 15.8% in 2024.

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 Louisiana: more rankings