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 2023, at 26.6%. West Feliciana Parish had the lowest, at 16.2%. The median was 23.3% and the figure for Louisiana was 23.2%. Source: the U.S. Census Bureau.

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Highest26.6St. Bernard Parish
Lowest16.2West Feliciana Parish
Median23.364 counties
Louisiana23.2History

Map of counties, 2023

Acadia Parish: 25.8 %Allen Parish: 22.6 %Ascension Parish: 26.3 %Assumption Parish: 19.9 %Avoyelles Parish: 23.5 %Beauregard Parish: 25.4 %Bienville Parish: 22.6 %Bossier Parish: 25.1 %Caddo Parish: 22.8 %Calcasieu Parish: 24.1 %Caldwell Parish: 22.2 %Cameron Parish: 23.3 %Catahoula Parish: 21.1 %Claiborne Parish: 18.5 %Concordia Parish: 23.5 %De Soto Parish: 24.2 %East Baton Rouge Parish: 22.1 %East Carroll Parish: 18.6 %East Feliciana Parish: 17.2 %Evangeline Parish: 24.5 %Franklin Parish: 24.3 %Grant Parish: 20.5 %Iberia Parish: 24.2 %Iberville Parish: 20.6 %Jackson Parish: 19.9 %Jefferson Parish: 22 %Jefferson Davis Parish: 25 %Lafayette Parish: 24.2 %Lafourche Parish: 22.9 %LaSalle Parish: 21.7 %Lincoln Parish: 19.9 %Livingston Parish: 25.8 %Madison Parish: 24.2 %Morehouse Parish: 21.5 %Natchitoches Parish: 21.6 %Orleans Parish: 19.8 %Ouachita Parish: 24.4 %Plaquemines Parish: 24.5 %Pointe Coupee Parish: 21.6 %Rapides Parish: 24.2 %Red River Parish: 24.2 %Richland Parish: 23.6 %Sabine Parish: 23.3 %St. Bernard Parish: 26.6 %St. Charles Parish: 24 %St. Helena Parish: 20.6 %St. James Parish: 22.4 %St. John the Baptist Parish: 23.4 %St. Landry Parish: 25.7 %St. Martin Parish: 23.8 %St. Mary Parish: 24.1 %St. Tammany Parish: 23.3 %Tangipahoa Parish: 24.3 %Tensas Parish: 19.2 %Terrebonne Parish: 24.1 %Union Parish: 21.1 %Vermilion Parish: 25.2 %Vernon Parish: 25.5 %Washington Parish: 23.3 %Webster Parish: 22.1 %West Baton Rouge Parish: 24.4 %West Carroll Parish: 22.4 %West Feliciana Parish: 16.2 %Winn Parish: 18.8 %
  • Under 21
  • 21 to 22
  • 22 to 23
  • 23 to 24
  • 24 and over
%, 2023. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2023

St. Bernard Parish: 26.6 %St. Bernard Parish26.6Ascension Parish: 26.3 %Ascension Parish26.3Livingston Parish: 25.8 %Livingston Parish25.8Acadia Parish: 25.8 %Acadia Parish25.8St. Landry Parish: 25.7 %St. Landry Parish25.7Vernon Parish: 25.5 %Vernon Parish25.5Beauregard Parish: 25.4 %Beauregard Parish25.4Vermilion Parish: 25.2 %Vermilion Parish25.2Bossier Parish: 25.1 %Bossier Parish25.1Jefferson Davis Parish: 25 %Jefferson Davis Parish25Plaquemines Parish: 24.5 %Plaquemines Parish24.5Evangeline Parish: 24.5 %Evangeline Parish24.5West Baton Rouge Parish: 24.4 %West Baton Rouge Parish24.4Ouachita Parish: 24.4 %Ouachita Parish24.4Tangipahoa Parish: 24.3 %Tangipahoa Parish24.3Franklin Parish: 24.3 %Franklin Parish24.3Rapides Parish: 24.2 %Rapides Parish24.2Red River Parish: 24.2 %Red River Parish24.2Madison Parish: 24.2 %Madison Parish24.2Iberia Parish: 24.2 %Iberia Parish24.2De Soto Parish: 24.2 %De Soto Parish24.2Lafayette Parish: 24.2 %Lafayette Parish24.2Terrebonne Parish: 24.1 %Terrebonne Parish24.1Calcasieu Parish: 24.1 %Calcasieu Parish24.1St. Mary Parish: 24.1 %St. Mary Parish24.1St. Charles Parish: 24 %St. Charles Parish24St. Martin Parish: 23.8 %St. Martin Parish23.8Richland Parish: 23.6 %Richland Parish23.6Concordia Parish: 23.5 %Concordia Parish23.5Avoyelles Parish: 23.5 %Avoyelles Parish23.5St. John the Baptist Parish: 23.4 %St. John the Baptist Parish23.4Cameron Parish: 23.3 %Cameron Parish23.3Sabine Parish: 23.3 %Sabine Parish23.3Washington Parish: 23.3 %Washington Parish23.3St. Tammany Parish: 23.3 %St. Tammany Parish23.3Lafourche Parish: 22.9 %Lafourche Parish22.9Caddo Parish: 22.8 %Caddo Parish22.8Allen Parish: 22.6 %Allen Parish22.6Bienville Parish: 22.6 %Bienville Parish22.6St. James Parish: 22.4 %St. James Parish22.4St. Bernard Parish: 26.6 %St. Bernard Parish26.6Ascension Parish: 26.3 %Ascension Parish26.3Livingston Parish: 25.8 %Livingston Parish25.8Acadia Parish: 25.8 %Acadia Parish25.8St. Landry Parish: 25.7 %St. Landry Parish25.7Vernon Parish: 25.5 %Vernon Parish25.5Beauregard Parish: 25.4 %Beauregard Parish25.4Vermilion Parish: 25.2 %Vermilion Parish25.2Bossier Parish: 25.1 %Bossier Parish25.1Jefferson Davis Parish: 25 %Jefferson Davis Parish25Plaquemines Parish: 24.5 %Plaquemines Parish24.5Evangeline Parish: 24.5 %Evangeline Parish24.5West Baton Rouge Parish: 24.4 %West Baton Rouge Parish24.4Ouachita Parish: 24.4 %Ouachita Parish24.4Tangipahoa Parish: 24.3 %Tangipahoa Parish24.3Franklin Parish: 24.3 %Franklin Parish24.3Rapides Parish: 24.2 %Rapides Parish24.2Red River Parish: 24.2 %Red River Parish24.2Madison Parish: 24.2 %Madison Parish24.2Iberia Parish: 24.2 %Iberia Parish24.2De Soto Parish: 24.2 %De Soto Parish24.2Lafayette Parish: 24.2 %Lafayette Parish24.2Terrebonne Parish: 24.1 %Terrebonne Parish24.1Calcasieu Parish: 24.1 %Calcasieu Parish24.1St. Mary Parish: 24.1 %St. Mary Parish24.1St. Charles Parish: 24 %St. Charles Parish24St. Martin Parish: 23.8 %St. Martin Parish23.8Richland Parish: 23.6 %Richland Parish23.6Concordia Parish: 23.5 %Concordia Parish23.5Avoyelles Parish: 23.5 %Avoyelles Parish23.5St. John the Baptist Parish: 23.4 %St. John the Baptist Parish23.4Cameron Parish: 23.3 %Cameron Parish23.3Sabine Parish: 23.3 %Sabine Parish23.3Washington Parish: 23.3 %Washington Parish23.3St. Tammany Parish: 23.3 %St. Tammany Parish23.3Lafourche Parish: 22.9 %Lafourche Parish22.9Caddo Parish: 22.8 %Caddo Parish22.8Allen Parish: 22.6 %Allen Parish22.6Bienville Parish: 22.6 %Bienville Parish22.6St. James Parish: 22.4 %St. James Parish22.4
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2023 (%)Change on 2022
1St. Bernard Parish26.6-0.3 pts
2Ascension Parish26.3-0.4 pts
3Livingston Parish25.8-0.2 pts
4Acadia Parish25.8-0.1 pts
5St. Landry Parish25.70 pts
6Vernon Parish25.50 pts
7Beauregard Parish25.4-0.1 pts
8Vermilion Parish25.2-0.1 pts
9Bossier Parish25.1-0.1 pts
10Jefferson Davis Parish25-0.3 pts
11Plaquemines Parish24.5-0.7 pts
12Evangeline Parish24.5-0.5 pts
13West Baton Rouge Parish24.4-0.4 pts
14Ouachita Parish24.4-0.3 pts
15Tangipahoa Parish24.3-0.1 pts
16Franklin Parish24.30 pts
17Rapides Parish24.2-0.1 pts
18Red River Parish24.2-0.4 pts
19Madison Parish24.2-0.6 pts
20Iberia Parish24.2-0.2 pts
21De Soto Parish24.2+0.2 pts
22Lafayette Parish24.2-0.1 pts
23Terrebonne Parish24.1-0.3 pts
24Calcasieu Parish24.10 pts
25St. Mary Parish24.1-0.1 pts
26St. Charles Parish24-0.4 pts
27St. Martin Parish23.8-0.3 pts
28Richland Parish23.6-0.2 pts
29Concordia Parish23.5-0.1 pts
30Avoyelles Parish23.5+0.1 pts
31St. John the Baptist Parish23.4+0.2 pts
32Cameron Parish23.3+0.1 pts
33Sabine Parish23.3-0.1 pts
34Washington Parish23.3-0 pts
35St. Tammany Parish23.3-0.3 pts
36Lafourche Parish22.9-0.2 pts
37Caddo Parish22.8-0.2 pts
38Allen Parish22.6-0.3 pts
39Bienville Parish22.6-0.2 pts
40St. James Parish22.4-0.2 pts
41West Carroll Parish22.4-0 pts
42Caldwell Parish22.2-0.6 pts
43Webster Parish22.1+0.2 pts
44East Baton Rouge Parish22.10 pts
45Jefferson Parish22-0 pts
46LaSalle Parish21.7-0.4 pts
47Pointe Coupee Parish21.6-0.2 pts
48Natchitoches Parish21.6-0.4 pts
49Morehouse Parish21.5-0.1 pts
50Catahoula Parish21.1-0.4 pts
51Union Parish21.1-0.1 pts
52St. Helena Parish20.6-0.2 pts
53Iberville Parish20.6+0.1 pts
54Grant Parish20.5-0.4 pts
55Jackson Parish19.9-0.5 pts
56Assumption Parish19.9-0.5 pts
57Lincoln Parish19.9+0.1 pts
58Orleans Parish19.8-0.1 pts
59Tensas Parish19.2-0.6 pts
60Winn Parish18.8-0.9 pts
61East Carroll Parish18.6-0.3 pts
62Claiborne Parish18.5-0.3 pts
63East Feliciana Parish17.2+0.3 pts
64West Feliciana Parish16.2-0.2 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 Louisiana by population under 18, 2023) [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, 2023. 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=2023. 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, 2023. 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=2023.

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, 2023 [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=2023 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_louisiana_by_2023,
  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, 2023}},
  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=2023. 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, 2023
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=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/louisiana-counties?period=2023.
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 Louisiana by population under 18 using official data, and cite the source.
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Questions

Which county has the highest population under 18?

St. Bernard Parish, with 26.6% in 2023, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

West Feliciana Parish, with 16.2% in 2023.

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