# Counties in Louisiana by population under 18, 2025

All 64 values come from U.S. Census Bureau for 2025, so the places are comparable.

- Indicator id: `population_0_17_share`
- Unit: %
- Definition: 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.
- Source: 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: 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.
- Web page: https://invokely.ai/rankings/population-under-18/louisiana-counties

| Rank | Place | % |
|---:|---|---:|
| 1 | Acadia Parish | 25.7 |
| 2 | St. Bernard Parish | 25.5 |
| 3 | Ascension Parish | 25.4 |
| 4 | St. Landry Parish | 25.4 |
| 5 | Vernon Parish | 25.3 |
| 6 | Livingston Parish | 25 |
| 7 | Beauregard Parish | 25 |
| 8 | Bossier Parish | 24.6 |
| 9 | Vermilion Parish | 24.6 |
| 10 | Jefferson Davis Parish | 24.5 |
| 11 | Rapides Parish | 24.1 |
| 12 | Red River Parish | 24 |
| 13 | Lafayette Parish | 23.9 |
| 14 | Tangipahoa Parish | 23.8 |
| 15 | St. Mary Parish | 23.8 |
| 16 | Evangeline Parish | 23.8 |
| 17 | Ouachita Parish | 23.8 |
| 18 | West Baton Rouge Parish | 23.8 |
| 19 | Iberia Parish | 23.7 |
| 20 | De Soto Parish | 23.7 |
| 21 | Calcasieu Parish | 23.7 |
| 22 | St. Martin Parish | 23.6 |
| 23 | Franklin Parish | 23.6 |
| 24 | Terrebonne Parish | 23.6 |
| 25 | Plaquemines Parish | 23.2 |
| 26 | Richland Parish | 23.2 |
| 27 | St. Charles Parish | 23.2 |
| 28 | Madison Parish | 23.1 |
| 29 | Avoyelles Parish | 23 |
| 30 | Sabine Parish | 22.9 |
| 31 | Washington Parish | 22.7 |
| 32 | St. John the Baptist Parish | 22.7 |
| 33 | Concordia Parish | 22.6 |
| 34 | St. Tammany Parish | 22.6 |
| 35 | Cameron Parish | 22.6 |
| 36 | Caddo Parish | 22.5 |
| 37 | Lafourche Parish | 22.5 |
| 38 | Caldwell Parish | 22.3 |
| 39 | West Carroll Parish | 22 |
| 40 | Bienville Parish | 21.9 |
| 41 | Webster Parish | 21.9 |
| 42 | East Baton Rouge Parish | 21.9 |
| 43 | Allen Parish | 21.9 |
| 44 | St. James Parish | 21.8 |
| 45 | Jefferson Parish | 21.8 |
| 46 | LaSalle Parish | 21.6 |
| 47 | Morehouse Parish | 21.5 |
| 48 | Natchitoches Parish | 21.4 |
| 49 | Pointe Coupee Parish | 21 |
| 50 | Union Parish | 20.8 |
| 51 | Catahoula Parish | 20.7 |
| 52 | Iberville Parish | 20.3 |
| 53 | Grant Parish | 19.8 |
| 54 | Lincoln Parish | 19.7 |
| 55 | Orleans Parish | 19.5 |
| 56 | St. Helena Parish | 19.5 |
| 57 | Assumption Parish | 19.4 |
| 58 | Tensas Parish | 19.1 |
| 59 | Jackson Parish | 18.4 |
| 60 | Claiborne Parish | 18.4 |
| 61 | East Carroll Parish | 18.1 |
| 62 | East Feliciana Parish | 17 |
| 63 | Winn Parish | 16.4 |
| 64 | West Feliciana Parish | 15.7 |