Ranking of Michigan 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 1.01M people in Michigan with Irish ancestry. Among all Michigan counties, Oakland County had the highest population with Irish ancestry (137.10K), followed by Wayne County (121.73K), and Macomb County (86.47K).
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 Michigan.
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Related Topics: Michigan ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Michigan Counties By Population with Irish Ancestry in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | Oakland County | 137097 |
| 2 | Wayne County | 121725 |
| 3 | Macomb County | 86474 |
| 4 | Kent County | 62514 |
| 5 | Genesee County | 42321 |
| 6 | Washtenaw County | 39526 |
| 7 | Ingham County | 31252 |
| 8 | Livingston County | 27998 |
| 9 | Kalamazoo County | 27685 |
| 10 | Ottawa County | 25733 |
| 11 | Jackson County | 22756 |
| 12 | St. Clair County | 19867 |
| 13 | Saginaw County | 17628 |
| 14 | Monroe County | 17383 |
| 15 | Berrien County | 16892 |
| 16 | Eaton County | 14849 |
| 17 | Muskegon County | 14202 |
| 18 | Calhoun County | 13520 |
| 19 | Grand Traverse County | 12929 |
| 20 | Lapeer County | 11552 |
| 21 | Lenawee County | 10851 |
| 22 | Allegan County | 10835 |
| 23 | Bay County | 10211 |
| 24 | Shiawassee County | 10122 |
| 25 | Clinton County | 9888 |
| 26 | Midland County | 9838 |
| 27 | Van Buren County | 9069 |
| 28 | Ionia County | 8139 |
| 29 | Isabella County | 8078 |
| 30 | Marquette County | 6974 |
| 31 | Barry County | 6345 |
| 32 | Montcalm County | 6262 |
| 33 | Tuscola County | 5454 |
| 34 | Cass County | 5352 |
| 35 | Hillsdale County | 5281 |
| 36 | Branch County | 5270 |
| 37 | St. Joseph County | 5237 |
| 38 | Newaygo County | 5027 |
| 39 | Sanilac County | 4880 |
| 40 | Mecosta County | 4575 |
| 41 | Emmet County | 4219 |
| 42 | Clare County | 4095 |
| 43 | Charlevoix County | 3856 |
| 44 | Gratiot County | 3756 |
| 45 | Cheboygan County | 3692 |
| 46 | Delta County | 3591 |
| 47 | Otsego County | 3558 |
| 48 | Wexford County | 3393 |
| 49 | Chippewa County | 3359 |
| 50 | Antrim County | 3207 |
| 51 | Roscommon County | 3032 |
| 52 | Huron County | 2927 |
| 53 | Houghton County | 2890 |
| 54 | Iosco County | 2863 |
| 55 | Leelanau County | 2828 |
| 56 | Mason County | 2814 |
| 57 | Alpena County | 2761 |
| 58 | Osceola County | 2681 |
| 59 | Gladwin County | 2673 |
| 60 | Dickinson County | 2668 |
| 61 | Manistee County | 2314 |
| 62 | Ogemaw County | 2234 |
| 63 | Oceana County | 2229 |
| 64 | Crawford County | 2091 |
| 65 | Kalkaska County | 2068 |
| 66 | Benzie County | 2017 |
| 67 | Arenac County | 1893 |
| 68 | Menominee County | 1782 |
| 69 | Missaukee County | 1605 |
| 70 | Alcona County | 1408 |
| 71 | Lake County | 1324 |
| 72 | Montmorency County | 1169 |
| 73 | Mackinac County | 1118 |
| 74 | Alger County | 1083 |
| 74 | Presque Isle County | 1083 |
| 75 | Oscoda County | 954 |
| 76 | Gogebic County | 898 |
| 77 | Iron County | 875 |
| 78 | Luce County | 715 |
| 79 | Baraga County | 699 |
| 80 | Schoolcraft County | 636 |
| 81 | Ontonagon County | 627 |
| 82 | Keweenaw County | 141 |
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