| Rank | Welsh as First Ancestry Population Percentage ▼ | School District / Population |
| 1. | 0.9% | Bossier Parish School District / 117,742 |
| 2. | 0.8% | Vernon Parish School District / 51,542 |
| 3. | 0.7% | St. Tammany Parish School District / 234,283 |
| 4. | 0.6% | Lincoln Parish School District / 46,543 |
| 5. | 0.5% | Webster Parish School District / 41,156 |
| 6. | 0.5% | East Feliciana Parish School District / 20,252 |
| 7. | 0.5% | De Soto Parish School District / 26,695 |
| 8. | 0.4% | Bienville Parish School District / 14,312 |
| 9. | 0.4% | Washington Parish School District / 34,771 |
| 10. | 0.4% | Union Parish School District / 22,633 |
| 11. | 0.4% | West Carroll Parish School District / 11,587 |
| 12. | 0.4% | Livingston Parish School District / 128,192 |
| 12. | 0.4% | Natchitoches Parish School District / 39,434 |
| 14. | 0.3% | Beauregard Parish School District / 35,662 |
| 15. | 0.3% | St. Charles Parish School District / 52,663 |
| 15. | 0.3% | Central Community School District / 28,693 |
| 15. | 0.3% | West Feliciana Parish School District / 15,575 |
| 15. | 0.3% | Orleans Parish School District / 341,407 |
| 19. | 0.3% | Zachary Community School District / 22,004 |
| 19. | 0.3% | East Baton Rouge Parish School District / 375,097 |
| 21. | 0.3% | Plaquemines Parish School District / 23,220 |
| 21. | 0.3% | Bogalusa City School District / 12,254 |
| 21. | 0.3% | Caddo Parish School District / 254,970 |
| 24. | 0.3% | Tangipahoa Parish School District / 121,209 |
| 24. | 0.3% | Calcasieu Parish School District / 192,307 |
| 26. | 0.3% | Sabine Parish School District / 24,265 |
| 27. | 0.2% | Ouachita Parish School District / 104,725 |
| 28. | 0.2% | Lafayette Parish School District / 221,602 |
| 28. | 0.2% | Rapides Parish School District / 131,655 |
| 30. | 0.2% | Claiborne Parish School District / 17,059 |
| 31. | 0.2% | Ascension Parish School District / 107,647 |
| 32. | 0.2% | Monroe City School District / 49,027 |
| 32. | 0.2% | Jackson Parish School District / 16,210 |
| 32. | 0.2% | Jefferson Parish School District / 432,706 |
| 35. | 0.2% | Concordia Parish School District / 20,624 |
| 35. | 0.2% | Jefferson Davis Parish School District / 31,529 |
| 37. | 0.1% | Caldwell Parish School District / 10,118 |
| 37. | 0.1% | Allen Parish School District / 25,740 |
| 39. | 0.1% | Winn Parish School District / 15,233 |
| 40. | 0.1% | Lafourche Parish School District / 96,453 |
| 40. | 0.1% | Red River Parish School District / 9,068 |
| 42. | 0.1% | Terrebonne Parish School District / 111,666 |
| 43. | 0.1% | Acadia Parish School District / 61,611 |
| 43. | 0.1% | Assumption Parish School District / 23,321 |
| 45. | 0.1% | Grant Parish School District / 22,049 |
| 45. | 0.1% | La Salle Parish School District / 14,840 |
| 45. | 0.1% | St. Landry Parish School District / 83,774 |
| 48. | 0.1% | St. John the Baptist Parish School District / 45,741 |
| 48. | 0.1% | Baker City School District / 13,868 |
| 50. | 0.1% | East Carroll Parish School District / 7,738 |
| 50. | 0.1% | Avoyelles Parish School District / 41,925 |
| 50. | 0.1% | Richland Parish School District / 20,785 |
| 53. | 0.1% | Iberville Parish School District / 33,386 |
| 53. | 0.1% | Tensas Parish School District / 5,189 |
| 53. | 0.1% | Vermilion Parish School District / 58,041 |
| 53. | 0.1% | St. Mary Parish School District / 54,285 |
| 57. | 0.1% | Iberia Parish School District / 73,527 |
| 58. | 0.0% | St. Helena Parish School District / 11,106 |
| 59. | 0.0% | Morehouse Parish School District / 27,893 |
| 59. | 0.0% | St. Martin Parish School District / 52,343 |
Please note that we only rank locations with 'Welsh as First Ancestry Population Percentage' data. The rank above might not be a complete list. Locations without 'Welsh as First Ancestry Population Percentage' data are not listed.
*ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.
