| Rank | Welsh as First Ancestry Population Percentage ▼ | School District / Population |
| 1. | 0.9% | East Feliciana Parish School District / 20,871 |
| 2. | 0.7% | Concordia Parish School District / 18,979 |
| 3. | 0.6% | St. Tammany Parish School District / 225,533 |
| 4. | 0.6% | Caddo Parish School District / 252,467 |
| 4. | 0.6% | Bogalusa City School District / 12,698 |
| 6. | 0.5% | Union Parish School District / 22,712 |
| 6. | 0.5% | Lincoln Parish School District / 42,801 |
| 8. | 0.5% | Jackson Parish School District / 15,111 |
| 8. | 0.5% | Bossier Parish School District / 108,722 |
| 10. | 0.5% | De Soto Parish School District / 26,247 |
| 11. | 0.5% | Zachary Community School District / 19,778 |
| 12. | 0.5% | Natchitoches Parish School District / 38,976 |
| 13. | 0.4% | St. Charles Parish School District / 51,410 |
| 13. | 0.4% | East Baton Rouge Parish School District / 366,158 |
| 13. | 0.4% | Winn Parish School District / 15,531 |
| 16. | 0.4% | Livingston Parish School District / 116,476 |
| 17. | 0.4% | Vernon Parish School District / 47,475 |
| 18. | 0.4% | Cameron Parish School District / 7,588 |
| 19. | 0.4% | St. James Parish School District / 21,056 |
| 20. | 0.3% | Plaquemines Parish School District / 22,655 |
| 21. | 0.3% | Calcasieu Parish School District / 185,017 |
| 21. | 0.3% | Webster Parish School District / 40,719 |
| 23. | 0.3% | Sabine Parish School District / 23,629 |
| 24. | 0.3% | Allen Parish School District / 25,528 |
| 24. | 0.3% | Ascension Parish School District / 98,471 |
| 26. | 0.3% | Rapides Parish School District / 132,128 |
| 26. | 0.3% | Tangipahoa Parish School District / 114,229 |
| 28. | 0.2% | Jefferson Davis Parish School District / 31,061 |
| 29. | 0.2% | Ouachita Parish School District / 98,343 |
| 29. | 0.2% | Orleans Parish School District / 328,669 |
| 31. | 0.2% | Lafayette Parish School District / 204,963 |
| 32. | 0.2% | Monroe City School District / 51,682 |
| 33. | 0.2% | Central Community School District / 28,383 |
| 33. | 0.2% | Beauregard Parish School District / 34,828 |
| 33. | 0.2% | Lafourche Parish School District / 92,852 |
| 36. | 0.2% | Jefferson Parish School District / 440,134 |
| 36. | 0.2% | St. John the Baptist Parish School District / 47,146 |
| 38. | 0.2% | St. Landry Parish School District / 90,983 |
| 38. | 0.2% | Washington Parish School District / 32,146 |
| 38. | 0.2% | Morehouse Parish School District / 28,761 |
| 38. | 0.2% | West Feliciana Parish School District / 15,134 |
| 42. | 0.2% | Bienville Parish School District / 14,848 |
| 43. | 0.1% | La Salle Parish School District / 13,973 |
| 44. | 0.1% | Grant Parish School District / 19,785 |
| 45. | 0.1% | Vermilion Parish School District / 55,612 |
| 45. | 0.1% | Terrebonne Parish School District / 108,277 |
| 47. | 0.1% | Acadia Parish School District / 59,616 |
| 47. | 0.1% | Baker City School District / 13,501 |
| 47. | 0.1% | Assumption Parish School District / 22,986 |
| 50. | 0.1% | Iberville Parish School District / 32,677 |
| 50. | 0.1% | Iberia Parish School District / 74,602 |
| 52. | 0.1% | Richland Parish School District / 20,415 |
| 53. | 0.1% | St. Martin Parish School District / 51,429 |
| 54. | 0.1% | St. Mary Parish School District / 51,085 |
| 55. | 0.0% | Avoyelles Parish School District / 42,184 |
| 56. | 0.0% | West Baton Rouge Parish School District / 22,323 |
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.
