| Rank | Welsh as First Ancestry Population Percentage ▼ | School District / Population |
| 1. | 3.0% | Oelrichs School District 23-3 / 485 |
| 2. | 2.8% | Elk Mountain School District 16-2 / 291 |
| 3. | 2.8% | Gayville-Volin School District 63-1 / 1,054 |
| 4. | 2.7% | West Central School District 49-7 / 6,282 |
| 5. | 2.5% | Chester School District 39-1 / 1,746 |
| 6. | 2.1% | Ipswich School District 22-6 / 2,281 |
| 7. | 2.0% | Colman-Egan School District 50-5 / 1,995 |
| 8. | 1.6% | Canistota School District 43-1 / 1,011 |
| 9. | 1.6% | Spearfish School District 40-2 / 15,310 |
| 10. | 1.5% | Dakota Valley School District 61-8 / 6,333 |
| 11. | 1.5% | Meade School District 46-1 / 18,268 |
| 12. | 1.4% | Edgemont School District 23-1 / 1,355 |
| 13. | 1.4% | Huron School District 02-2 / 15,321 |
| 14. | 1.3% | Lead-Deadwood School District 40-1 / 6,755 |
| 15. | 1.3% | Hot Springs School District 23-2 / 5,363 |
| 16. | 1.2% | Wessington Springs School District 36-2 / 1,816 |
| 17. | 1.2% | Grant-Deuel School District 25-3 / 1,163 |
| 18. | 1.2% | Platte-Geddes School District 11-5 / 2,848 |
| 18. | 1.2% | Rapid City School District 51-4 / 91,759 |
| 20. | 1.2% | Stanley County School District 57-1 / 2,940 |
| 21. | 1.1% | Redfield School District 56-4 / 3,349 |
| 22. | 1.0% | Mitchell School District 17-2 / 18,130 |
| 23. | 1.0% | Vermillion School District 13-1 / 12,245 |
| 24. | 0.9% | Northwestern Area School District 56-7 / 1,830 |
| 25. | 0.9% | Hurley School District 60-2 / 766 |
| 26. | 0.9% | Elkton School District 05-3 / 1,417 |
| 26. | 0.9% | Arlington School District 38-1 / 1,748 |
| 28. | 0.8% | Jones County School District 37-3 / 1,062 |
| 29. | 0.8% | South Central School District 26-5 / 946 |
| 29. | 0.8% | Marion School District 60-3 / 1,510 |
| 31. | 0.8% | De Smet School District 38-2 / 1,634 |
| 31. | 0.8% | Pierre School District 32-2 / 15,885 |
| 33. | 0.7% | Chamberlain School District 07-1 / 6,450 |
| 34. | 0.7% | Wall School District 51-5 / 1,721 |
| 35. | 0.7% | Aberdeen School District 06-1 / 30,905 |
| 35. | 0.7% | Brandon Valley School District 49-2 / 16,069 |
| 37. | 0.7% | Selby School District 62-5 / 1,618 |
| 38. | 0.7% | Emery School District 30-2 / 1,864 |
| 39. | 0.7% | Madison Central School District 39-2 / 8,762 |
| 40. | 0.6% | Harding County School District 31-1 / 1,367 |
| 41. | 0.6% | Hill City School District 51-2 / 2,922 |
| 42. | 0.6% | Sanborn Central School District 55-5 / 1,174 |
| 43. | 0.6% | Tri-Valley School District 49-6 / 4,939 |
| 43. | 0.6% | Britton-Hecla School District 45-4 / 3,079 |
| 45. | 0.6% | Wolsey-Wessington School District 02-6 / 1,246 |
| 45. | 0.6% | Wilmot School District 54-7 / 1,559 |
| 45. | 0.6% | Canton School District 41-1 / 5,158 |
| 48. | 0.6% | Iroquois School District 02-3 / 1,154 |
| 48. | 0.6% | Centerville School District 60-1 / 1,539 |
| 50. | 0.5% | Yankton School District 63-3 / 19,771 |
| 50. | 0.5% | Doland School District 56-2 / 970 |
| 52. | 0.5% | Mobridge-Pollock School District 62-6 / 4,194 |
| 52. | 0.5% | Brookings School District 05-1 / 25,456 |
| 52. | 0.5% | Flandreau School District 50-3 / 3,559 |
| 55. | 0.5% | Douglas School District 51-1 / 11,838 |
| 55. | 0.5% | Sioux Valley School District 05-5 / 3,640 |
| 57. | 0.5% | Colome Consolidated School District 59-3 / 1,584 |
| 57. | 0.5% | Langford School District 45-2 / 1,534 |
| 57. | 0.5% | Sioux Falls School District 49-5 / 144,005 |
| 57. | 0.5% | Clark School District 12-2 / 2,533 |
| 61. | 0.5% | Faith School District 46-2 / 739 |
| 62. | 0.5% | Custer School District 16-1 / 8,135 |
| 63. | 0.5% | Willow Lake School District 12-3 / 1,111 |
| 63. | 0.5% | Baltic School District 49-1 / 2,146 |
| 65. | 0.5% | Deuel School District 19-4 / 3,245 |
| 66. | 0.4% | Kadoka School District 35-2 / 3,339 |
| 66. | 0.4% | Haakon School District 27-1 / 1,602 |
| 66. | 0.4% | Elk Point-Jefferson School District 61-7 / 4,176 |
| 69. | 0.4% | Henry School District 14-2 / 583 |
| 69. | 0.4% | Watertown School District 14-4 / 24,542 |
| 71. | 0.4% | Gregory School District 26-4 / 2,114 |
| 71. | 0.4% | Faulkton School District 24-4 / 2,109 |
| 73. | 0.4% | Howard School District 48-3 / 2,318 |
| 73. | 0.4% | Mount Vernon School District 17-3 / 999 |
| 73. | 0.4% | Hoven School District 53-2 / 974 |
| 76. | 0.3% | McCook Central School District 43-7 / 2,385 |
| 77. | 0.3% | Frederick Area School District 06-2 / 1,068 |
| 77. | 0.3% | Groton Area School District 06-6 / 3,829 |
| 77. | 0.3% | White River School District 47-1 / 1,754 |
| 80. | 0.3% | Leola School District 44-2 / 1,164 |
| 81. | 0.3% | Webster School District 18-4 / 3,237 |
| 82. | 0.3% | Bison School District 52-1 / 776 |
| 82. | 0.3% | Lake Preston School District 38-3 / 1,256 |
| 84. | 0.3% | Tripp-Delmont School District 33-5 / 1,674 |
| 85. | 0.2% | Newell School District 09-2 / 2,806 |
| 86. | 0.2% | Deubrook School District 05-6 / 1,851 |
| 86. | 0.2% | Irene-Wakonda School District 13-3 / 2,466 |
| 88. | 0.2% | Miller Area School District 29-4 / 3,079 |
| 88. | 0.2% | Belle Fourche School District 09-1 / 7,415 |
| 90. | 0.2% | Beresford School District 61-2 / 3,647 |
| 91. | 0.2% | Tea Area School District 41-5 / 6,017 |
| 91. | 0.2% | Edmunds Central School District 22-5 / 1,174 |
| 91. | 0.2% | Hamlin School District 28-3 / 3,507 |
| 94. | 0.2% | Hanson School District 30-1 / 1,930 |
| 94. | 0.2% | Lennox School District 41-4 / 5,433 |
| 96. | 0.2% | Lemmon School District 52-4 / 2,054 |
| 96. | 0.2% | Wagner School District 11-4 / 3,795 |
| 96. | 0.2% | Sisseton School District 54-2 / 7,893 |
| 99. | 0.2% | Menno School District 33-2 / 1,444 |
| 99. | 0.2% | McLaughlin School District 15-2 / 2,637 |
| 99. | 0.2% | Eureka School District 44-1 / 1,407 |
| 102. | 0.1% | Alcester-Hudson School District 61-1 / 2,326 |
| 103. | 0.1% | Warner School District 06-5 / 995 |
| 104. | 0.1% | Harrisburg School District 41-2 / 16,573 |
| 105. | 0.1% | Eagle Butte School District 20-1 / 4,666 |
| 106. | 0.1% | Bennett County School District 03-1 / 3,432 |
| 107. | 0.0% | Milbank School District 25-4 / 5,338 |
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.
