Ranking of Louisiana Counties By Percentage of Population Aged 25 years and above with an Educational attainment of Less than High School Diploma in 2021 (ACS-5Yrs)
Updated on September 3, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the percentage of the population of Louisiana (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 13.77%. Among all Louisiana counties, East Carroll Parish had the highest percentage of its population (aged 25 years and above) with an educational attainment of Less than High School Diploma (34.44%), followed by Catahoula Parish (27.17%), and Evangeline Parish (25.06%).
The chart below shows the top 10 Louisiana counties, and the table below shows the ranking of all Louisiana counties.
You can see similar information for other educational attainments.
You can also see similar information for other states and for the United States.
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Related Topics: Louisiana ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates.
Ranking of Louisiana Counties By Percentage of Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
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| Rank | County | Percentage of Population (Aged 25yrs+) (%) |
|---|---|---|
| 1 | East Carroll Parish | 34.44 |
| 2 | Catahoula Parish | 27.17 |
| 3 | Evangeline Parish | 25.06 |
| 4 | Madison Parish | 24.56 |
| 5 | Avoyelles Parish | 23.43 |
| 6 | Assumption Parish | 23.24 |
| 7 | Caldwell Parish | 23.19 |
| 8 | Franklin Parish | 23.14 |
| 9 | St. Helena Parish | 22.56 |
| 10 | Tensas Parish | 22.23 |
| 11 | Claiborne Parish | 22.08 |
| 12 | St. Landry Parish | 21.77 |
| 13 | Richland Parish | 21.36 |
| 14 | Allen Parish | 20.22 |
| 15 | Iberville Parish | 20.16 |
| 16 | Morehouse Parish | 19.97 |
| 17 | Acadia Parish | 19.70 |
| 18 | West Carroll Parish | 19.25 |
| 19 | Lafourche Parish | 19.08 |
| 20 | LaSalle Parish | 18.93 |
| 20 | St. Mary Parish | 18.93 |
| 21 | Terrebonne Parish | 18.87 |
| 22 | Pointe Coupee Parish | 18.86 |
| 23 | Concordia Parish | 18.84 |
| 24 | Grant Parish | 18.79 |
| 25 | East Feliciana Parish | 18.75 |
| 26 | Red River Parish | 18.52 |
| 26 | St. Bernard Parish | 18.52 |
| 27 | Washington Parish | 18.40 |
| 28 | Winn Parish | 18.21 |
| 29 | Tangipahoa Parish | 17.58 |
| 30 | De Soto Parish | 17.53 |
| 31 | West Feliciana Parish | 17.38 |
| 32 | Jefferson Davis Parish | 17.06 |
| 33 | Vermilion Parish | 16.83 |
| 34 | Jackson Parish | 16.70 |
| 35 | Iberia Parish | 16.49 |
| 36 | St. Martin Parish | 16.23 |
| 37 | Plaquemines Parish | 15.11 |
| 38 | Webster Parish | 14.52 |
| 39 | St. James Parish | 14.01 |
| 40 | Cameron Parish | 13.89 |
| 40 | Sabine Parish | 13.89 |
| 41 | St. John the Baptist Parish | 13.86 |
| 42 | Bienville Parish | 13.49 |
| 43 | Union Parish | 13.47 |
| 44 | Caddo Parish | 13.45 |
| 45 | Jefferson Parish | 13.21 |
| 46 | Natchitoches Parish | 13.04 |
| 47 | Rapides Parish | 13.00 |
| 48 | West Baton Rouge Parish | 12.85 |
| 49 | Livingston Parish | 12.64 |
| 50 | Beauregard Parish | 12.50 |
| 51 | Vernon Parish | 11.98 |
| 52 | Calcasieu Parish | 11.83 |
| 52 | Orleans Parish | 11.83 |
| 53 | Ouachita Parish | 11.82 |
| 54 | Ascension Parish | 11.31 |
| 55 | Lincoln Parish | 11.13 |
| 56 | Lafayette Parish | 10.70 |
| 57 | Bossier Parish | 9.64 |
| 58 | East Baton Rouge Parish | 9.56 |
| 59 | St. Charles Parish | 9.30 |
| 60 | St. Tammany Parish | 8.70 |