| County | Rank | Change (2020) ↓ | 2026 Pop. | 2020 Pop. |
|---|---|---|---|---|
| Lake County | 1 | 10.44% | 13,348 | 12,086 |
| Montmorency County | 2 | 7.94% | 9,897 | 9,169 |
| Keweenaw County | 3 | 7.19% | 2,207 | 2,059 |
| Oscoda County | 4 | 7.13% | 8,817 | 8,230 |
| Crawford County | 5 | 6.56% | 13,838 | 12,986 |
| Antrim County | 6 | 6.39% | 24,955 | 23,457 |
| Mecosta County | 7 | 5.68% | 42,708 | 40,414 |
| Mackinac County | 8 | 5.06% | 11,369 | 10,821 |
| Ottawa County | 9 | 4.66% | 310,728 | 296,893 |
| Montcalm County | 10 | 4.62% | 69,740 | 66,659 |
| Kalkaska County | 11 | 4.59% | 18,746 | 17,924 |
| Alcona County | 12 | 3.7% | 10,561 | 10,184 |
| Otsego County | 13 | 3.6% | 26,043 | 25,137 |
| Leelanau County | 14 | 3.6% | 23,115 | 22,312 |
| Benzie County | 15 | 3.57% | 18,644 | 18,002 |
| Newaygo County | 16 | 3.53% | 51,857 | 50,091 |
| Gladwin County | 17 | 3.3% | 26,209 | 25,371 |
| Kent County | 18 | 3.27% | 680,052 | 658,508 |
| Clare County | 19 | 2.73% | 31,678 | 30,837 |
| Manistee County | 20 | 2.66% | 25,737 | 25,070 |
| Marquette County | 21 | 2.66% | 68,312 | 66,542 |
| Allegan County | 22 | 2.6% | 123,809 | 120,666 |
| Wexford County | 23 | 2.55% | 34,543 | 33,684 |
| Oceana County | 24 | 2.55% | 27,397 | 26,717 |
| Ingham County | 25 | 2.46% | 292,028 | 285,005 |
| Osceola County | 26 | 2.42% | 23,461 | 22,906 |
| Branch County | 27 | 2.42% | 45,962 | 44,877 |
| Barry County | 28 | 2.19% | 63,973 | 62,599 |
| Muskegon County | 29 | 2.17% | 178,577 | 174,783 |
| Ogemaw County | 30 | 2.02% | 21,200 | 20,781 |
| Schoolcraft County | 31 | 1.98% | 8,208 | 8,049 |
| Houghton County | 32 | 1.95% | 37,981 | 37,256 |
| Livingston County | 33 | 1.94% | 197,744 | 193,974 |
| Clinton County | 34 | 1.9% | 80,675 | 79,168 |
| Missaukee County | 35 | 1.89% | 15,352 | 15,067 |
| Roscommon County | 36 | 1.71% | 23,877 | 23,476 |
| Oakland County | 37 | 1.7% | 1,294,125 | 1,272,524 |
| Grand Traverse County | 38 | 1.64% | 96,994 | 95,428 |
| Lapeer County | 39 | 1.31% | 89,757 | 88,595 |
| Macomb County | 40 | 1.1% | 889,945 | 880,240 |
| Kalamazoo County | 41 | 1.03% | 264,468 | 261,780 |
| Iron County | 42 | 0.95% | 11,741 | 11,630 |
| Monroe County | 43 | 0.79% | 156,138 | 154,912 |
| Eaton County | 44 | 0.74% | 109,982 | 109,174 |
| Van Buren County | 45 | 0.62% | 76,042 | 75,574 |
| Arenac County | 46 | 0.53% | 15,077 | 14,998 |
| Cass County | 47 | 0.52% | 51,821 | 51,553 |
| Cheboygan County | 48 | 0.47% | 25,694 | 25,575 |
| Midland County | 49 | 0.3% | 83,740 | 83,488 |
| Presque Isle County | 50 | 0.27% | 13,036 | 13,001 |
| St. Clair County | 51 | 0.18% | 160,668 | 160,386 |
| Hillsdale County | 52 | 0.09% | 45,782 | 45,740 |
| Isabella County | 53 | -0.01% | 64,509 | 64,518 |
| St. Joseph County | 54 | -0.02% | 60,913 | 60,923 |
| Mason County | 55 | -0.06% | 29,017 | 29,033 |
| Washtenaw County | 56 | -0.09% | 371,472 | 371,814 |
| Ionia County | 57 | -0.1% | 66,805 | 66,871 |
| Gogebic County | 58 | -0.22% | 14,317 | 14,349 |
| Alpena County | 59 | -0.24% | 28,823 | 28,891 |
| Iosco County | 60 | -0.33% | 25,107 | 25,189 |
| Ontonagon County | 61 | -0.33% | 5,780 | 5,799 |
| Baraga County | 62 | -0.33% | 8,116 | 8,143 |
| Charlevoix County | 63 | -0.36% | 25,949 | 26,042 |
| Jackson County | 64 | -0.44% | 159,516 | 160,215 |
| Dickinson County | 65 | -0.62% | 25,736 | 25,896 |
| Shiawassee County | 66 | -0.67% | 67,534 | 67,990 |
| Calhoun County | 67 | -0.74% | 133,205 | 134,198 |
| Wayne County | 68 | -0.96% | 1,772,542 | 1,789,634 |
| Delta County | 69 | -1.16% | 36,451 | 36,877 |
| Saginaw County | 70 | -1.18% | 187,614 | 189,853 |
| Genesee County | 71 | -1.19% | 400,898 | 405,746 |
| Berrien County | 72 | -1.23% | 152,494 | 154,395 |
| Sanilac County | 73 | -1.41% | 39,928 | 40,499 |
| Tuscola County | 74 | -1.48% | 52,537 | 53,324 |
| Emmet County | 75 | -1.49% | 33,603 | 34,112 |
| Gratiot County | 76 | -1.53% | 41,018 | 41,657 |
| Luce County | 77 | -1.58% | 6,310 | 6,411 |
| Lenawee County | 78 | -1.63% | 97,733 | 99,348 |
| Bay County | 79 | -1.86% | 101,814 | 103,739 |
| Chippewa County | 80 | -2.01% | 36,053 | 36,793 |
| Menominee County | 81 | -2.96% | 22,760 | 23,454 |
| Alger County | 82 | -3.05% | 8,575 | 8,845 |
| Huron County | 83 | -3.37% | 30,319 | 31,378 |
Michigan's counties show varied growth patterns from 2020 to 2026. Lake County leads with 1.67% annualized growth, followed by Montmorency County (1.28%) and Keweenaw County (1.16%). The largest counties are Wayne County (1,772,542), Oakland County (1,294,125), and Macomb County (889,945). Of the 83 counties in Michigan, 52 are growing while 31 have experienced population decline. Overall, counties averaged 0.23% annualized growth, with total population growing by 0.14% annually.
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