Local Data Search
A total of 102 results found. Show Results on Map.
| Rank | Irish as First Ancestry Population Percentage ▼ | County / Population |
| 1. | 15.2% | Grundy, IL / 37,535 |
| 2. | 14.9% | Lee, IL / 36,062 |
| 3. | 14.5% | Gallatin, IL / 6,445 |
| 4. | 14.5% | Saline, IL / 26,733 |
| 5. | 13.3% | Pope, IL / 4,413 |
| 6. | 13.3% | Henderson, IL / 8,213 |
| 7. | 13.1% | Johnson, IL / 12,878 |
| 8. | 13.0% | Piatt, IL / 16,365 |
| 9. | 13.0% | Sangamon, IL / 188,951 |
| 10. | 12.9% | Williamson, IL / 61,296 |
| 11. | 12.8% | Will, IL / 502,266 |
| 11. | 12.8% | Brown, IL / 6,950 |
| 13. | 12.7% | La Salle, IL / 111,509 |
| 14. | 12.5% | Kendall, IL / 54,544 |
| 15. | 12.4% | Livingston, IL / 39,678 |
| 16. | 12.3% | Coles, IL / 53,196 |
| 17. | 12.3% | Mchenry, IL / 260,077 |
| 18. | 12.2% | Warren, IL / 18,735 |
| 19. | 12.2% | Marshall, IL / 13,180 |
| 20. | 11.8% | Dupage, IL / 904,161 |
| 21. | 11.7% | Mcdonough, IL / 32,913 |
| 22. | 11.6% | Jo Daviess, IL / 22,289 |
| 23. | 11.5% | Knox, IL / 55,836 |
| 24. | 11.5% | Mclean, IL / 150,433 |
| 25. | 11.4% | Dewitt, IL / 16,798 |
| 26. | 11.4% | White, IL / 15,371 |
| 27. | 11.4% | Franklin, IL / 39,018 |
| 28. | 11.3% | Hardin, IL / 4,800 |
| 29. | 11.3% | Mercer, IL / 16,957 |
| 30. | 11.3% | Edgar, IL / 19,704 |
| 31. | 11.2% | Jersey, IL / 21,668 |
| 32. | 11.1% | Stark, IL / 6,332 |
| 33. | 10.9% | Logan, IL / 31,183 |
| 34. | 10.8% | Whiteside, IL / 60,653 |
| 34. | 10.8% | Dekalb, IL / 88,969 |
| 36. | 10.7% | Shelby, IL / 22,893 |
| 37. | 10.6% | Marion, IL / 41,691 |
| 38. | 10.6% | Christian, IL / 35,372 |
| 39. | 10.5% | Bureau, IL / 35,503 |
| 39. | 10.5% | Macoupin, IL / 49,019 |
| 41. | 10.5% | Ford, IL / 14,241 |
| 42. | 10.5% | Madison, IL / 258,941 |
| 43. | 10.4% | Rock Island, IL / 149,374 |
| 44. | 10.3% | Morgan, IL / 36,616 |
| 45. | 10.3% | Union, IL / 18,293 |
| 46. | 10.3% | Ogle, IL / 51,032 |
| 46. | 10.3% | Clark, IL / 17,008 |
| 46. | 10.3% | Tazewell, IL / 128,485 |
| 49. | 10.2% | Greene, IL / 14,761 |
| 50. | 10.2% | Lawrence, IL / 15,452 |
| 51. | 10.2% | Peoria, IL / 183,433 |
| 52. | 10.1% | Menard, IL / 12,486 |
| 53. | 10.1% | Massac, IL / 15,161 |
| 54. | 10.1% | Moultrie, IL / 14,287 |
| 55. | 10.1% | Jackson, IL / 59,612 |
| 56. | 10.0% | Hancock, IL / 20,121 |
| 57. | 10.0% | Fulton, IL / 38,250 |
| 58. | 9.9% | Kankakee, IL / 103,833 |
| 59. | 9.9% | Perry, IL / 23,094 |
| 60. | 9.9% | Macon, IL / 114,706 |
| 61. | 9.8% | Schuyler, IL / 7,189 |
| 62. | 9.8% | Carroll, IL / 16,674 |
| 63. | 9.6% | Boone, IL / 41,786 |
| 64. | 9.6% | Jefferson, IL / 40,045 |
| 64. | 9.6% | Fayette, IL / 21,802 |
| 66. | 9.6% | Champaign, IL / 179,669 |
| 67. | 9.5% | Clay, IL / 14,560 |
| 68. | 9.4% | Wabash, IL / 12,937 |
| 69. | 9.2% | Montgomery, IL / 30,652 |
| 70. | 9.1% | Scott, IL / 5,537 |
| 71. | 9.1% | Douglas, IL / 19,922 |
| 72. | 9.1% | Hamilton, IL / 8,621 |
| 73. | 9.0% | Mason, IL / 16,038 |
| 74. | 9.0% | Lake, IL / 644,356 |
| 75. | 9.0% | Henry, IL / 51,020 |
| 75. | 9.0% | Randolph, IL / 33,893 |
| 77. | 8.9% | Vermilion, IL / 83,919 |
| 78. | 8.9% | Winnebago, IL / 278,418 |
| 79. | 8.8% | Kane, IL / 404,119 |
| 79. | 8.8% | Woodford, IL / 35,469 |
| 81. | 8.6% | Bond, IL / 17,633 |
| 82. | 8.6% | Crawford, IL / 20,452 |
| 83. | 8.6% | Adams, IL / 68,277 |
| 84. | 8.5% | Cass, IL / 13,695 |
| 84. | 8.5% | Monroe, IL / 27,619 |
| 86. | 8.2% | Alexander, IL / 9,590 |
| 87. | 8.1% | Wayne, IL / 17,151 |
| 88. | 8.1% | Iroquois, IL / 31,334 |
| 89. | 8.1% | Putnam, IL / 6,086 |
| 90. | 8.1% | Pike, IL / 17,384 |
| 91. | 7.9% | Cook, IL / 5,376,741 |
| 92. | 7.8% | Cumberland, IL / 11,253 |
| 93. | 7.8% | Richland, IL / 16,149 |
| 94. | 7.3% | Saint Clair, IL / 256,082 |
| 95. | 7.0% | Stephenson, IL / 48,979 |
| 96. | 6.5% | Jasper, IL / 10,117 |
| 97. | 6.3% | Calhoun, IL / 5,084 |
| 98. | 6.3% | Effingham, IL / 34,264 |
| 99. | 6.3% | Edwards, IL / 6,971 |
| 100. | 6.3% | Pulaski, IL / 7,348 |
| 101. | 5.9% | Clinton, IL / 35,535 |
| 102. | 5.6% | Washington, IL / 15,148 |
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.