Ranking of Missouri Counties By Population with Irish Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 750.02K people in Missouri with Irish ancestry. Among all Missouri counties, St. Louis County had the highest population with Irish ancestry (127.33K), followed by Jackson County (77.62K), and St. Charles County (65.59K).
The chart and table below shows the top 10 counties with high number of people with Irish ancestry.
You can see similar information for other states and for other ancestry groups in Missouri.
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Related Topics: Missouri ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Missouri Counties By Population with Irish Ancestry in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | St. Louis County | 127329 |
| 2 | Jackson County | 77620 |
| 3 | St. Charles County | 65591 |
| 4 | Jefferson County | 35029 |
| 5 | Clay County | 33468 |
| 6 | Greene County | 30425 |
| 7 | St. Louis city | 29503 |
| 8 | Boone County | 22156 |
| 9 | Franklin County | 15663 |
| 10 | Cass County | 14822 |
| 11 | Platte County | 14648 |
| 12 | Jasper County | 14465 |
| 13 | Christian County | 12298 |
| 14 | Buchanan County | 10806 |
| 15 | St. Francois County | 8533 |
| 16 | Lincoln County | 7739 |
| 17 | Johnson County | 7350 |
| 18 | Cole County | 7073 |
| 19 | Taney County | 6997 |
| 20 | Cape Girardeau County | 6917 |
| 21 | Newton County | 6860 |
| 22 | Butler County | 5853 |
| 23 | Pulaski County | 5422 |
| 24 | Laclede County | 5240 |
| 25 | Callaway County | 5158 |
| 26 | Lawrence County | 5079 |
| 27 | Camden County | 4987 |
| 28 | Webster County | 4858 |
| 29 | Phelps County | 4831 |
| 30 | Warren County | 4472 |
| 31 | Pettis County | 4382 |
| 32 | Polk County | 4322 |
| 33 | Stone County | 4032 |
| 34 | Stoddard County | 3891 |
| 35 | Howell County | 3851 |
| 36 | Dunklin County | 3757 |
| 37 | Washington County | 3734 |
| 38 | Scott County | 3493 |
| 39 | Crawford County | 3428 |
| 40 | Randolph County | 3282 |
| 41 | Miller County | 3196 |
| 42 | Marion County | 3184 |
| 43 | Ray County | 3176 |
| 44 | Lafayette County | 3048 |
| 45 | Barry County | 3017 |
| 46 | Henry County | 2914 |
| 47 | Clinton County | 2887 |
| 48 | Adair County | 2800 |
| 49 | New Madrid County | 2706 |
| 50 | Vernon County | 2651 |
| 51 | Nodaway County | 2407 |
| 52 | Audrain County | 2370 |
| 53 | Saline County | 2360 |
| 54 | Wright County | 2331 |
| 55 | Texas County | 2309 |
| 56 | Benton County | 2307 |
| 57 | Bates County | 2244 |
| 58 | Andrew County | 2108 |
| 59 | Gasconade County | 2092 |
| 60 | DeKalb County | 1984 |
| 61 | Ripley County | 1910 |
| 62 | Ste. Genevieve County | 1900 |
| 63 | Pike County | 1870 |
| 64 | Perry County | 1809 |
| 65 | Morgan County | 1802 |
| 66 | Moniteau County | 1777 |
| 67 | Cedar County | 1722 |
| 68 | Macon County | 1668 |
| 69 | Dent County | 1635 |
| 70 | Pemiscot County | 1633 |
| 71 | Cooper County | 1594 |
| 72 | Montgomery County | 1494 |
| 73 | McDonald County | 1492 |
| 74 | Dallas County | 1433 |
| 75 | Hickory County | 1411 |
| 76 | Douglas County | 1374 |
| 77 | Ralls County | 1309 |
| 78 | Barton County | 1305 |
| 79 | Livingston County | 1279 |
| 80 | Wayne County | 1268 |
| 81 | Oregon County | 1248 |
| 82 | Madison County | 1240 |
| 83 | Iron County | 1212 |
| 84 | Maries County | 1159 |
| 85 | Monroe County | 1129 |
| 86 | Mississippi County | 1048 |
| 87 | Linn County | 1023 |
| 88 | Ozark County | 1018 |
| 89 | Osage County | 995 |
| 90 | Reynolds County | 988 |
| 91 | Bollinger County | 902 |
| 92 | Clark County | 889 |
| 93 | Howard County | 885 |
| 94 | Shannon County | 879 |
| 95 | Lewis County | 876 |
| 96 | Grundy County | 871 |
| 97 | Harrison County | 870 |
| 98 | Daviess County | 836 |
| 99 | Carroll County | 826 |
| 100 | St. Clair County | 817 |
| 101 | Carter County | 810 |
| 102 | Dade County | 779 |
| 103 | Atchison County | 762 |
| 104 | Caldwell County | 725 |
| 105 | Gentry County | 680 |
| 106 | Holt County | 498 |
| 107 | Shelby County | 461 |
| 108 | Chariton County | 439 |
| 109 | Sullivan County | 367 |
| 110 | Putnam County | 352 |
| 111 | Mercer County | 341 |
| 112 | Schuyler County | 284 |
| 113 | Worth County | 279 |
| 114 | Scotland County | 237 |
| 115 | Knox County | 157 |
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