| Rank | Irish as First Ancestry Population Percentage ▼ | School District / Population |
| 1. | 28.7% | Fremont County School District 24 / 1,432 |
| 2. | 24.2% | Platte County School District 2 / 1,398 |
| 3. | 23.9% | Johnson County School District 1 / 8,084 |
| 4. | 22.8% | Fremont County School District 6 / 2,182 |
| 5. | 22.5% | Weston County School District 1 / 5,435 |
| 6. | 22.2% | Platte County School District 1 / 7,006 |
| 7. | 21.4% | Fremont County School District 2 / 1,448 |
| 8. | 21.1% | Park County School District 16 / 1,106 |
| 9. | 21.1% | Converse County School District 1 / 8,949 |
| 10. | 20.2% | Park County School District 1 / 11,164 |
| 11. | 19.7% | Campbell County School District 1 / 40,290 |
| 12. | 19.6% | Niobrara County School District 1 / 2,344 |
| 13. | 19.4% | Converse County School District 2 / 4,010 |
| 14. | 19.1% | Weston County School District 7 / 1,330 |
| 15. | 18.7% | Big Horn County School District 3 / 2,873 |
| 16. | 18.1% | Goshen County School District 1 / 12,039 |
| 17. | 18.0% | Laramie County School District 1 / 82,514 |
| 18. | 18.0% | Sheridan County School District 3 / 336 |
| 19. | 17.8% | Uinta County School District 4 / 2,797 |
| 19. | 17.8% | Hot Springs County School District 1 / 4,523 |
| 21. | 17.5% | Carbon County School District 2 / 4,701 |
| 22. | 17.5% | Washakie County School District 2 / 743 |
| 23. | 17.4% | Natrona County School District 1 / 71,817 |
| 24. | 17.4% | Sheridan County School District 1 / 4,798 |
| 25. | 17.4% | Albany County School District 1 / 32,985 |
| 26. | 17.2% | Sheridan County School District 2 / 22,928 |
| 27. | 16.4% | Crook County School District 1 / 6,338 |
| 27. | 16.4% | Uinta County School District 6 / 2,773 |
| 29. | 16.3% | Carbon County School District 1 / 10,737 |
| 30. | 16.0% | Laramie County School District 2 / 4,378 |
| 31. | 15.7% | Sweetwater County School District 2 / 13,014 |
| 32. | 15.5% | Fremont County School District 25 / 15,959 |
| 33. | 15.2% | Sweetwater County School District 1 / 26,035 |
| 34. | 15.1% | Fremont County School District 1 / 10,427 |
| 35. | 15.0% | Lincoln County School District 1 / 4,360 |
| 36. | 14.9% | Sublette County School District 1 / 4,741 |
| 37. | 14.4% | Teton County School District 1 / 20,067 |
| 38. | 13.9% | Sublette County School District 9 / 3,609 |
| 39. | 13.3% | Big Horn County School District 1 / 2,722 |
| 40. | 13.1% | Park County School District 6 / 14,599 |
| 41. | 12.1% | Big Horn County School District 2 / 3,648 |
| 42. | 12.0% | Uinta County School District 1 / 14,549 |
| 43. | 10.9% | Washakie County School District 1 / 7,048 |
| 44. | 8.6% | Big Horn County School District 4 / 2,211 |
| 45. | 5.4% | Lincoln County School District 2 / 11,276 |
| 46. | 4.8% | Fremont County School District 38 / 1,777 |
| 47. | 2.2% | Fremont County School District 14 / 2,554 |
| 48. | 0.2% | Fremont County School District 21 / 1,653 |
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.
