| Rank | Irish as First Ancestry Population Percentage ▼ | School District / Population |
| 1. | 47.6% | Trail Creek Elementary School District / 48 |
| 2. | 46.7% | Davey Elementary School District / 64 |
| 3. | 44.4% | Polaris Elementary School District / 101 |
| 4. | 41.9% | Twin Buttes Elementary School District / 84 |
| 5. | 41.2% | Ayers Elementary School District / 17 |
| 6. | 39.7% | Camas Prairie Elementary School District / 216 |
| 7. | 39.3% | Deerfield Elementary School District / 35 |
| 8. | 38.1% | Ramsay Elementary School District / 1,075 |
| 9. | 36.8% | Helmville Elementary School District / 330 |
| 10. | 36.5% | Avon Elementary School District / 243 |
| 11. | 36.1% | Butte Elementary School District / 32,463 |
| 12. | 36.0% | Butte High School District / 33,769 |
| 13. | 34.8% | Yaak Elementary School District / 185 |
| 14. | 34.7% | Greycliff Elementary School District / 239 |
| 15. | 34.4% | Elliston Elementary School District / 281 |
| 16. | 31.7% | Froid High School District / 489 |
| 16. | 31.7% | Froid Elementary School District / 489 |
| 18. | 31.4% | McLeod Elementary School District / 277 |
| 19. | 30.5% | Springdale Elementary School District / 157 |
| 20. | 30.3% | Hall Elementary School District / 253 |
| 21. | 28.5% | Anaconda Elementary School District / 9,079 |
| 22. | 28.5% | Cardwell Elementary School District / 421 |
| 23. | 28.5% | Trego Elementary School District / 727 |
| 24. | 28.3% | Anaconda High School District / 9,149 |
| 25. | 28.2% | Augusta Elementary School District / 594 |
| 26. | 28.1% | Baker K-12 Schools / 2,360 |
| 27. | 28.1% | South Stacey Elementary School District / 126 |
| 28. | 27.8% | Paradise Elementary School District / 320 |
| 29. | 27.5% | Grant Elementary School District / 120 |
| 30. | 27.2% | Alder Elementary School District / 292 |
| 31. | 27.0% | Cottonwood Elementary School District / 215 |
| 32. | 26.8% | Big Dry Creek Elementary School District / 41 |
| 33. | 26.5% | Alzada Elementary School District / 175 |
| 33. | 26.5% | Troy Elementary School District / 2,786 |
| 35. | 26.3% | Swan Lake-Salmon Elementary School District / 293 |
| 36. | 25.7% | Troy High School District / 3,505 |
| 37. | 25.1% | Philipsburg K-12 Schools / 1,724 |
| 38. | 25.0% | Bonner Elementary School District / 2,588 |
| 39. | 24.8% | Raynesford Elementary School District / 109 |
| 40. | 24.7% | Augusta High School District / 689 |
| 41. | 24.6% | Target Range Elementary School District / 4,158 |
| 42. | 24.4% | Sand Springs Elementary School District / 130 |
| 43. | 24.4% | Geraldine Elementary School District / 595 |
| 44. | 24.4% | Victor K-12 Schools / 3,668 |
| 45. | 24.3% | Clinton Elementary School District / 2,044 |
| 46. | 24.1% | Whitlash Elementary School District / 29 |
| 47. | 24.1% | Trinity Elementary School District / 1,408 |
| 48. | 24.1% | Twin Bridges K-12 Schools / 1,501 |
| 49. | 24.1% | Rosebud High School District / 371 |
| 50. | 24.0% | Divide Elementary School District / 157 |
| 51. | 23.9% | Lolo Elementary School District / 4,621 |
| 52. | 23.9% | Power Elementary School District / 520 |
| 53. | 23.8% | Clancy Elementary School District / 2,812 |
| 54. | 23.8% | S Y Elementary School District / 50 |
| 55. | 23.8% | Superior K-12 Schools / 2,443 |
| 56. | 23.7% | Hellgate Elementary School District / 12,009 |
| 57. | 23.6% | Geraldine High School District / 635 |
| 58. | 23.6% | Shelby Elementary School District / 3,688 |
| 59. | 23.6% | Power High School District / 526 |
| 60. | 23.5% | Lincoln K-12 Schools / 1,038 |
| 61. | 23.5% | McCormick Elementary School District / 395 |
| 62. | 23.5% | Whitehall High School District / 3,638 |
| 63. | 23.4% | Shelby High School District / 3,940 |
| 64. | 23.3% | Potomac Elementary School District / 1,164 |
| 65. | 23.3% | Lincoln County High School District / 6,260 |
| 66. | 23.2% | East Helena Elementary School District / 8,718 |
| 67. | 23.1% | Whitehall Elementary School District / 3,161 |
| 68. | 22.8% | Eureka Elementary School District / 4,721 |
| 69. | 22.8% | Ophir Elementary School District / 1,478 |
| 70. | 22.7% | Fairview Elementary School District / 1,430 |
| 71. | 22.7% | Fair-Mont-Egan Elementary School District / 1,273 |
| 72. | 22.6% | Shepherd Elementary School District / 3,261 |
| 72. | 22.6% | Shepherd High School District / 3,261 |
| 74. | 22.5% | Red Lodge High School District / 3,838 |
| 75. | 22.5% | Jackson Elementary School District / 115 |
| 76. | 22.5% | Fairview High School District / 1,439 |
| 76. | 22.5% | Red Lodge Elementary School District / 3,324 |
| 78. | 22.3% | Sheridan High School District / 1,910 |
| 79. | 22.2% | Rosebud Elementary School District / 355 |
| 80. | 22.1% | Hawks Home Elementary School District / 122 |
| 81. | 21.8% | Luther Elementary School District / 444 |
| 82. | 21.7% | Plains High School District / 3,254 |
| 83. | 21.7% | Galata Elementary School District / 252 |
| 84. | 21.7% | Charlo Elementary School District / 1,551 |
| 85. | 21.4% | Florence-Carlton K-12 Schools / 5,760 |
| 86. | 21.4% | Bozeman Elementary School District / 51,052 |
| 87. | 21.4% | Powell County High School District / 7,198 |
| 87. | 21.4% | Noxon Elementary School District / 1,534 |
| 89. | 21.4% | West Yellowstone K-12 School District / 1,770 |
| 90. | 21.4% | Sheridan Elementary School District / 1,618 |
| 91. | 21.3% | Helena High School District / 59,916 |
| 92. | 21.2% | Missoula High School District / 98,293 |
| 93. | 21.0% | Bozeman High School District / 58,415 |
| 94. | 21.0% | Plains Elementary School District / 2,934 |
| 95. | 21.0% | Miles City Elementary School District / 9,973 |
| 96. | 20.9% | Helena Elementary School District / 49,204 |
| 97. | 20.9% | Deer Park Elementary School District / 1,018 |
| 97. | 20.9% | Springhill Elementary School District / 159 |
| 99. | 20.9% | Smith Valley Elementary School District / 1,980 |
| 100. | 20.7% | Harrison K-12 Schools / 783 |
| 101. | 20.7% | Fortine Elementary School District / 812 |
| 102. | 20.6% | Stanford K-12 Schools / 887 |
| 103. | 20.5% | Missoula Elementary School District / 68,124 |
| 104. | 20.5% | Jefferson High School District / 7,975 |
| 104. | 20.5% | Ringling Elementary School District / 82 |
| 106. | 20.4% | Columbus Elementary School District / 3,537 |
| 107. | 20.4% | Ulm Elementary School District / 737 |
| 108. | 20.3% | Winifred K-12 Schools / 302 |
| 109. | 20.2% | East Glacier Park Elementary School District / 811 |
| 110. | 20.1% | Jordan Elementary School District / 702 |
| 111. | 20.1% | Cottonwood Elementary School District / 171 |
| 112. | 20.1% | Ryegate K-12 Schools / 334 |
| 113. | 19.9% | Custer County High School District / 11,548 |
| 114. | 19.9% | Wise River Elementary School District / 357 |
| 115. | 19.9% | Deer Lodge Elementary School District / 5,602 |
| 116. | 19.8% | Shields Valley High School District / 1,625 |
| 116. | 19.8% | Shields Valley Elementary School District / 1,625 |
| 118. | 19.6% | Great Falls High School District / 71,219 |
| 119. | 19.6% | Great Falls Elementary School District / 71,164 |
| 120. | 19.5% | Fishtail Elementary School District / 363 |
| 121. | 19.5% | Roundup Elementary School District / 3,881 |
| 122. | 19.5% | Roundup High School District / 4,041 |
| 123. | 19.4% | Belt High School District / 2,003 |
| 124. | 19.3% | Boulder Elementary School District / 2,429 |
| 125. | 19.2% | Columbus High School District / 3,742 |
| 126. | 19.2% | Drummond High School District / 1,320 |
| 127. | 19.2% | Fort Benton Elementary School District / 1,766 |
| 128. | 19.1% | Garfield County High School District / 1,224 |
| 129. | 19.0% | Townsend K-12 Schools / 4,841 |
| 130. | 19.0% | Fromberg K-12 Schools / 1,262 |
| 131. | 19.0% | Lockwood Elementary School District / 7,589 |
| 132. | 18.9% | Highwood High School District / 530 |
| 133. | 18.9% | Swan River Elementary School District / 1,682 |
| 133. | 18.9% | Wolf Creek Elementary School District / 586 |
| 135. | 18.8% | Arrowhead Elementary School District / 1,625 |
| 136. | 18.8% | Anderson Elementary School District / 1,147 |
| 137. | 18.8% | Somers Elementary School District / 5,135 |
| 138. | 18.8% | Opheim K-12 Schools / 385 |
| 139. | 18.8% | Park High School District / 12,485 |
| 140. | 18.8% | Manhattan Elementary School District / 2,579 |
| 140. | 18.8% | Livingston Elementary School District / 10,375 |
| 142. | 18.7% | Vaughn Elementary School District / 962 |
| 143. | 18.7% | Grass Range High School District / 422 |
| 144. | 18.7% | Highwood Elementary School District / 562 |
| 145. | 18.7% | Noxon High School District / 2,415 |
| 146. | 18.6% | Belgrade Elementary School District / 19,900 |
| 147. | 18.6% | Belgrade High School District / 20,130 |
| 148. | 18.5% | Belt Elementary School District / 1,997 |
| 149. | 18.5% | Olney-Bissell Elementary School District / 949 |
| 150. | 18.4% | Denton High School District / 721 |
| 150. | 18.4% | Lavina K-12 Schools / 476 |
| 152. | 18.4% | Ennis K-12 Schools / 2,975 |
| 152. | 18.4% | Hinsdale Elementary School District / 422 |
| 154. | 18.3% | Fairfield Elementary School District / 956 |
| 154. | 18.3% | Hot Springs High School District / 1,572 |
| 156. | 18.2% | Name N/A / 866,873 |
| 157. | 18.2% | Simms High School District / 3,223 |
| 158. | 18.1% | Montana City Elementary School District / 2,554 |
| 159. | 18.0% | Glendive Elementary School District / 6,406 |
| 160. | 18.0% | Gold Creek Elementary School District / 274 |
| 160. | 18.0% | Corvallis K-12 Schools / 7,173 |
| 160. | 18.0% | Reichle Elementary School District / 91 |
| 163. | 17.9% | Sun River Valley Elementary School District / 2,261 |
| 164. | 17.9% | Three Forks High School District / 2,930 |
| 165. | 17.7% | Frenchtown K-12 Schools / 6,181 |
| 165. | 17.7% | Three Forks Elementary School District / 2,958 |
| 167. | 17.7% | Kila Elementary School District / 1,536 |
| 168. | 17.7% | Grass Range Elementary School District / 405 |
| 169. | 17.7% | Richey Elementary School District / 418 |
| 170. | 17.6% | Melstone High School District / 307 |
| 170. | 17.6% | Beaverhead County High School District / 8,678 |
| 172. | 17.6% | Conrad Elementary School District / 3,379 |
| 172. | 17.6% | Helena Flats Elementary School District / 1,568 |
| 172. | 17.6% | Fort Benton High School District / 2,044 |
| 175. | 17.6% | Thompson Falls High School District / 3,463 |
| 175. | 17.6% | Thompson Falls Elementary School District / 3,463 |
| 177. | 17.5% | Pleasant Valley Elementary School District / 93 |
| 178. | 17.4% | Denton Elementary School District / 686 |
| 179. | 17.4% | Vida Elementary School District / 512 |
| 180. | 17.2% | Dawson High School District / 8,432 |
| 181. | 17.2% | Monforton Elementary School District / 1,953 |
| 182. | 17.1% | Melrose Elementary School District / 74 |
| 183. | 17.1% | Flathead High School District / 55,349 |
| 183. | 17.1% | Belfry K-12 Schools / 568 |
| 185. | 17.1% | Drummond Elementary School District / 1,067 |
| 186. | 17.0% | Charlo High School District / 2,230 |
| 186. | 17.0% | Absarokee Elementary School District / 1,599 |
| 188. | 16.9% | Bigfork High School District / 8,219 |
| 189. | 16.9% | Absarokee High School District / 2,124 |
| 190. | 16.9% | Stevensville Elementary School District / 7,061 |
| 190. | 16.9% | Conrad High School District / 3,514 |
| 192. | 16.8% | Valier Elementary School District / 1,156 |
| 193. | 16.8% | Dillon Elementary School District / 7,639 |
| 194. | 16.8% | West Valley Elementary School District / 3,567 |
| 195. | 16.8% | Kalispell Elementary School District / 27,570 |
| 196. | 16.7% | Laurel Elementary School District / 11,231 |
| 196. | 16.7% | Darby K-12 Schools / 3,584 |
| 198. | 16.7% | Geyser High School District / 317 |
| 199. | 16.6% | Big Sandy Elementary School District / 1,349 |
| 200. | 16.6% | Choteau Elementary School District / 2,584 |
| 201. | 16.5% | Melstone Elementary School District / 520 |
| 202. | 16.5% | Whitefish Elementary School District / 13,487 |
| 203. | 16.5% | Basin Elementary School District / 180 |
| 203. | 16.5% | Cohagen Elementary School District / 79 |
| 203. | 16.5% | Pine Grove Elementary School District / 79 |
| 206. | 16.4% | Evergreen Elementary School District / 6,321 |
| 207. | 16.4% | Chinook Elementary School District / 1,947 |
| 208. | 16.4% | Columbia Falls Elementary School District / 14,042 |
| 209. | 16.4% | Bigfork Elementary School District / 6,349 |
| 210. | 16.3% | Lindsay Elementary School District / 407 |
| 211. | 16.3% | Whitefish High School District / 14,045 |
| 212. | 16.3% | Dutton/Brady K-12 Schools / 1,012 |
| 213. | 16.2% | Columbia Falls High School District / 14,488 |
| 214. | 16.2% | Laurel High School District / 10,728 |
| 215. | 16.2% | Gardiner Elementary School District / 1,809 |
| 216. | 16.2% | Gardiner High School District / 1,881 |
| 217. | 16.2% | North Star Elementary School District / 997 |
| 217. | 16.2% | Peerless K-12 Schools / 157 |
| 219. | 16.2% | St. Regis K-12 Schools / 1,256 |
| 219. | 16.2% | Hinsdale High School District / 474 |
| 221. | 16.1% | Plevna K-12 Schools / 453 |
| 222. | 16.1% | Gallatin Gateway Elementary School District / 1,579 |
| 223. | 16.0% | Malta K-12 Schools / 3,380 |
| 224. | 16.0% | Cooke City Elementary School District / 72 |
| 225. | 15.9% | Joliet High School District / 2,347 |
| 226. | 15.9% | Pioneer Elementary School District / 1,126 |
| 227. | 15.9% | Ovando Elementary School District / 326 |
| 227. | 15.9% | Wisdom Elementary School District / 325 |
| 229. | 15.8% | Centerville Elementary School District / 1,658 |
| 230. | 15.8% | Blue Creek Elementary School District / 2,472 |
| 230. | 15.8% | Havre High School District / 12,707 |
| 232. | 15.7% | Hamilton K-12 Schools / 10,976 |
| 233. | 15.7% | Winnett K-12 Schools / 598 |
| 234. | 15.6% | Havre Elementary School District / 12,351 |
| 235. | 15.6% | Westby K-12 Schools / 352 |
| 235. | 15.6% | Chester-Joplin-Inverness Elementary School District / 2,233 |
| 237. | 15.5% | Manhattan High School District / 4,322 |
| 238. | 15.5% | Billings Elementary School District / 104,812 |
| 238. | 15.5% | Billings High School District / 125,086 |
| 240. | 15.4% | Sweet Grass County High School District / 3,632 |
| 241. | 15.4% | Savage High School District / 520 |
| 242. | 15.4% | Kester Elementary School District / 26 |
| 243. | 15.3% | White Sulphur Springs High School District / 2,024 |
| 243. | 15.3% | Alberton K-12 Schools / 1,167 |
| 245. | 15.3% | Cascade High School District / 2,520 |
| 245. | 15.3% | Canyon Creek Elementary School District / 2,143 |
| 247. | 15.2% | La Motte Elementary School District / 764 |
| 248. | 15.2% | White Sulphur Springs Elementary School District / 1,881 |
| 249. | 15.2% | Stevensville High School District / 10,237 |
| 250. | 15.1% | Choteau High School District / 3,127 |
| 251. | 15.1% | Nye Elementary School District / 232 |
| 252. | 15.0% | S H Elementary School District / 112 |
| 253. | 15.0% | Chester-Joplin-Inverness High School District / 2,376 |
| 254. | 15.0% | Glasgow K-12 Schools / 4,913 |
| 255. | 14.9% | Valier High School District / 1,467 |
| 256. | 14.9% | St. Ignatius K-12 Schools / 3,124 |
| 257. | 14.9% | Broadus Elementary School District / 1,290 |
| 258. | 14.9% | Savage Elementary School District / 522 |
| 259. | 14.8% | Cleveland Elementary School District / 54 |
| 260. | 14.8% | Trout Creek Elementary School District / 881 |
| 261. | 14.7% | Rau Elementary School District / 294 |
| 262. | 14.6% | Wibaux K-12 Schools / 1,067 |
| 262. | 14.6% | Lustre Elementary School District / 251 |
| 264. | 14.5% | Malmborg Elementary School District / 227 |
| 264. | 14.5% | Lewistown Elementary School District / 9,022 |
| 266. | 14.5% | Powder River County High School District / 1,659 |
| 267. | 14.5% | Chinook High School District / 2,332 |
| 268. | 14.4% | Medicine Lake K-12 Schools / 761 |
| 269. | 14.4% | Deer Creek Elementary School District / 1,591 |
| 270. | 14.4% | Cut Bank High School District / 4,167 |
| 270. | 14.4% | Cut Bank Elementary School District / 4,167 |
| 272. | 14.4% | Cottonwood Elementary School District / 319 |
| 272. | 14.4% | Centerville High School District / 1,597 |
| 274. | 14.3% | Marion Elementary School District / 994 |
| 275. | 14.3% | Fergus High School District / 9,230 |
| 275. | 14.3% | North Star High School District / 1,156 |
| 277. | 14.3% | Bridger K-12 Schools / 1,382 |
| 277. | 14.3% | Hobson K-12 Schools / 751 |
| 279. | 14.3% | Reedpoint Elementary School District / 555 |
| 279. | 14.3% | Hot Springs Elementary School District / 1,356 |
| 281. | 14.2% | Moore Elementary School District / 483 |
| 281. | 14.2% | Moore High School District / 483 |
| 283. | 14.1% | Libby K-12 Schools / 9,742 |
| 283. | 14.1% | Polson Elementary School District / 9,910 |
| 285. | 14.0% | Elder Grove Elementary School District / 2,725 |
| 286. | 14.0% | Polson High School District / 10,969 |
| 287. | 13.9% | Roberts K-12 Schools / 597 |
| 287. | 13.9% | Whitewater K-12 Schools / 125 |
| 289. | 13.8% | Creston Elementary School District / 1,205 |
| 290. | 13.8% | Harlowton Elementary School District / 1,800 |
| 291. | 13.7% | Carter County High School District / 1,289 |
| 292. | 13.7% | Richey High School District / 501 |
| 293. | 13.7% | Fairfield High School District / 1,832 |
| 294. | 13.4% | Lambert Elementary School District / 435 |
| 294. | 13.4% | Upper West Shore Elementary School District / 698 |
| 296. | 13.4% | Van Norman Elementary School District / 97 |
| 297. | 13.4% | Pine Creek Elementary School District / 333 |
| 298. | 13.4% | Lambert High School District / 440 |
| 299. | 13.3% | Reedpoint High School District / 502 |
| 300. | 13.2% | Cayuse Prairie Elementary School District / 2,698 |
| 300. | 13.2% | Carter Elementary School District / 114 |
| 302. | 13.1% | Saco High School District / 360 |
| 303. | 13.1% | Park City High School District / 2,226 |
| 304. | 13.1% | Harlowton High School District / 1,908 |
| 305. | 13.0% | Circle High School District / 1,714 |
| 306. | 13.0% | Sunset Elementary School District / 185 |
| 307. | 13.0% | Cascade Elementary School District / 1,650 |
| 308. | 12.8% | Birney Elementary School District / 117 |
| 309. | 12.7% | Sidney High School District / 7,099 |
| 310. | 12.6% | Big Timber Elementary School District / 2,860 |
| 311. | 12.6% | Elysian Elementary School District / 713 |
| 312. | 12.6% | Joliet Elementary School District / 1,844 |
| 313. | 12.5% | Spring Creek Elementary School District / 80 |
| 313. | 12.5% | Swan Valley Elementary School District / 433 |
| 315. | 12.5% | Sidney Elementary School District / 6,474 |
| 316. | 12.4% | Geyser Elementary School District / 208 |
| 317. | 12.4% | Sunburst K-12 Schools / 1,203 |
| 318. | 12.3% | Deep Creek Elementary School District / 133 |
| 319. | 12.2% | Terry K-12 Schools / 1,089 |
| 319. | 12.2% | Judith Gap High School District / 280 |
| 319. | 12.2% | Judith Gap Elementary School District / 280 |
| 322. | 11.9% | Plentywood K-12 Schools / 2,392 |
| 323. | 11.9% | Valley View Elementary School District / 361 |
| 324. | 11.9% | Park City Elementary School District / 2,431 |
| 325. | 11.9% | Woodman Elementary School District / 557 |
| 326. | 11.8% | Rapelje Elementary School District / 289 |
| 327. | 11.8% | Yellowstone Academy Elementary School District / 67 |
| 328. | 11.7% | Lennep Elementary School District / 61 |
| 329. | 11.6% | Huntley Project K-12 Schools / 3,646 |
| 330. | 11.6% | Rapelje High School District / 387 |
| 331. | 11.5% | West Glacier Elementary School District / 446 |
| 332. | 11.4% | Dodson Elementary School District / 286 |
| 333. | 11.4% | Lone Rock Elementary School District / 3,176 |
| 334. | 11.4% | Seeley Lake Elementary School District / 1,746 |
| 335. | 11.3% | De Smet Elementary School District / 559 |
| 336. | 11.3% | Saco Elementary School District / 412 |
| 337. | 11.3% | Amsterdam Elementary School District / 1,708 |
| 338. | 11.1% | Hysham K-12 Schools / 848 |
| 339. | 11.0% | Circle Elementary School District / 1,202 |
| 340. | 11.0% | Bear Paw Elementary School District / 101 |
| 341. | 10.7% | Bainville K-12 Schools / 412 |
| 342. | 10.7% | Custer K-12 Schools / 445 |
| 343. | 10.3% | Kircher Elementary School District / 696 |
| 344. | 10.3% | Ekalaka Elementary School District / 992 |
| 345. | 10.2% | Independent Elementary School District / 2,926 |
| 346. | 9.7% | Kinsey Elementary School District / 420 |
| 347. | 9.6% | Arlee Elementary School District / 2,488 |
| 347. | 9.6% | Arlee High School District / 2,488 |
| 349. | 9.5% | Forsyth Elementary School District / 2,502 |
| 350. | 9.5% | Forsyth High School District / 2,555 |
| 351. | 9.4% | Dodson High School District / 341 |
| 352. | 9.4% | Bynum Elementary School District / 220 |
| 353. | 9.0% | Garrison Elementary School District / 142 |
| 354. | 9.0% | Golden Ridge Elementary School District / 178 |
| 355. | 8.7% | Turner Elementary School District / 361 |
| 355. | 8.7% | Turner High School District / 361 |
| 357. | 8.5% | Scobey K-12 Schools / 1,492 |
| 358. | 8.4% | Big Sandy High School District / 2,556 |
| 358. | 8.4% | Greenfield Elementary School District / 704 |
| 360. | 8.3% | Willow Creek High School District / 316 |
| 361. | 8.2% | Spring Creek Elementary School District / 61 |
| 362. | 8.2% | Ronan Elementary School District / 8,214 |
| 362. | 8.2% | Ronan High School District / 8,214 |
| 364. | 8.1% | Colstrip High School District / 2,520 |
| 364. | 8.1% | Colstrip Elementary School District / 2,520 |
| 366. | 8.1% | Roy K-12 Schools / 297 |
| 367. | 8.1% | Morin Elementary School District / 513 |
| 368. | 8.0% | Dupuyer Elementary School District / 311 |
| 369. | 7.9% | Willow Creek Elementary School District / 364 |
| 370. | 7.9% | Culbertson Elementary School District / 1,139 |
| 371. | 7.5% | Frazer High School District / 668 |
| 372. | 7.5% | Dixon Elementary School District / 679 |
| 373. | 7.4% | Ashland Elementary School District / 1,144 |
| 374. | 7.3% | Melville Elementary School District / 198 |
| 375. | 7.3% | Broadview Elementary School District / 867 |
| 376. | 7.2% | Pendroy Elementary School District / 323 |
| 377. | 7.2% | Hardin High School District / 7,844 |
| 377. | 7.2% | Nashua K-12 Schools / 905 |
| 379. | 6.7% | Broadview High School District / 952 |
| 380. | 6.6% | Wolf Point Elementary School District / 3,666 |
| 381. | 6.5% | Sylvanite Elementary School District / 139 |
| 382. | 6.2% | Wolf Point High School District / 4,225 |
| 383. | 6.2% | Culbertson High School District / 1,027 |
| 384. | 6.2% | Hardin Elementary School District / 8,883 |
| 385. | 6.2% | Benton Lake Elementary School District / 65 |
| 386. | 5.7% | Molt Elementary School District / 183 |
| 387. | 5.0% | King Colony Elementary School District / 199 |
| 388. | 4.9% | Brorson Elementary School District / 227 |
| 389. | 4.4% | Browning High School District / 9,084 |
| 390. | 4.1% | Bloomfield Elementary School District / 115 |
| 391. | 4.1% | Lima K-12 Schools / 454 |
| 392. | 4.1% | Pass Creek Elementary School District / 86 |
| 393. | 3.7% | Shawmut Elementary School District / 108 |
| 394. | 3.6% | Frontier Elementary School District / 559 |
| 395. | 3.6% | Poplar High School District / 3,124 |
| 395. | 3.6% | Poplar Elementary School District / 3,124 |
| 397. | 3.5% | Harlem High School District / 2,696 |
| 398. | 3.4% | Frazer Elementary School District / 417 |
| 399. | 3.3% | Harlem Elementary School District / 2,608 |
| 400. | 3.1% | Zurich Elementary School District / 284 |
| 401. | 2.8% | Browning Elementary School District / 8,273 |
| 402. | 2.7% | Lodge Grass Elementary School District / 1,654 |
| 403. | 2.7% | Plenty Coups High School District / 1,019 |
| 403. | 2.7% | Pryor Elementary School District / 1,019 |
| 405. | 2.2% | Lodge Grass High School District / 2,242 |
| 406. | 2.1% | Knees Elementary School District / 107 |
| 407. | 2.1% | Brockton Elementary School District / 996 |
| 407. | 2.1% | Brockton High School District / 996 |
| 409. | 2.0% | Box Elder High School District / 416 |
| 409. | 2.0% | Box Elder Elementary School District / 416 |
| 411. | 2.0% | Rocky Boy High School District / 1,613 |
| 412. | 1.9% | Lame Deer High School District / 5,207 |
| 413. | 1.7% | Biddle Elementary School District / 121 |
| 414. | 1.2% | Heart Butte K-12 Schools / 772 |
| 415. | 1.2% | Rocky Boy Elementary School District / 2,801 |
| 416. | 1.1% | Hays-Lodge Pole K-12 Schools / 1,083 |
| 417. | 0.9% | Wyola Elementary School District / 588 |
| 418. | 0.4% | Lame Deer Elementary School District / 2,928 |
Please note that we only rank locations with 'Irish as First Ancestry Population Percentage' data. The rank above might not be a complete list. Locations without 'Irish 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.
