| Rank |
County |
Population (2012) |
| 1 |
Wayne County, Michigan
|
1,792,365
|
| 2 |
Oakland County, Michigan
|
1,220,657
|
| 3 |
Macomb County, Michigan
|
847,383
|
| 4 |
Kent County, Michigan
|
614,462
|
| 5 |
Genesee County, Michigan
|
418,408
|
| 6 |
Washtenaw County, Michigan
|
350,946
|
| 7 |
Ingham County, Michigan
|
281,723
|
| 8 |
Ottawa County, Michigan
|
269,099
|
| 9 |
Kalamazoo County, Michigan
|
254,580
|
| 10 |
Saginaw County, Michigan
|
198,353
|
| 11 |
Livingston County, Michigan
|
182,838
|
| 12 |
Muskegon County, Michigan
|
170,182
|
| 13 |
St Clair County, Michigan
|
160,644
|
| 14 |
Jackson County, Michigan
|
160,309
|
| 15 |
Berrien County, Michigan
|
156,067
|
| 16 |
Monroe County, Michigan
|
151,048
|
| 17 |
Calhoun County, Michigan
|
135,099
|
| 18 |
Allegan County, Michigan
|
112,039
|
| 19 |
Eaton County, Michigan
|
108,008
|
| 20 |
Bay County, Michigan
|
106,935
|
| 21 |
Lenawee County, Michigan
|
98,987
|
| 22 |
Grand Traverse County, Michigan
|
89,112
|
| 23 |
Lapeer County, Michigan
|
88,173
|
| 24 |
Midland County, Michigan
|
83,822
|
| 25 |
Clinton County, Michigan
|
76,001
|
| 26 |
Van Buren County, Michigan
|
75,454
|
| 27 |
Isabella County, Michigan
|
70,617
|
| 28 |
Shiawassee County, Michigan
|
69,232
|
| 29 |
Marquette County, Michigan
|
67,906
|
| 30 |
Ionia County, Michigan
|
63,941
|
| 31 |
Montcalm County, Michigan
|
63,097
|
| 32 |
St Joseph County, Michigan
|
60,796
|
| 33 |
Barry County, Michigan
|
58,990
|
| 34 |
Tuscola County, Michigan
|
54,662
|
| 35 |
Cass County, Michigan
|
52,242
|
| 36 |
Newaygo County, Michigan
|
47,959
|
| 37 |
Hillsdale County, Michigan
|
46,229
|
| 38 |
Branch County, Michigan
|
43,868
|
| 39 |
Mecosta County, Michigan
|
43,318
|
| 40 |
Sanilac County, Michigan
|
42,268
|
| 41 |
Gratiot County, Michigan
|
42,063
|
| 42 |
Chippewa County, Michigan
|
38,917
|
| 43 |
Delta County, Michigan
|
36,884
|
| 44 |
Houghton County, Michigan
|
36,520
|
| 45 |
Emmet County, Michigan
|
32,915
|
| 46 |
Wexford County, Michigan
|
32,608
|
| 47 |
Huron County, Michigan
|
32,463
|
| 48 |
Clare County, Michigan
|
30,753
|
| 49 |
Alpena County, Michigan
|
29,234
|
| 50 |
Mason County, Michigan
|
28,680
|
| 51 |
Oceana County, Michigan
|
26,310
|
| 52 |
Dickinson County, Michigan
|
26,220
|
| 53 |
Charlevoix County, Michigan
|
26,023
|
| 54 |
Cheboygan County, Michigan
|
25,835
|
| 55 |
Gladwin County, Michigan
|
25,484
|
| 56 |
Iosco County, Michigan
|
25,357
|
| 57 |
Manistee County, Michigan
|
24,672
|
| 58 |
Roscommon County, Michigan
|
24,106
|
| 59 |
Otsego County, Michigan
|
24,020
|
| 60 |
Menominee County, Michigan
|
23,815
|
| 61 |
Antrim County, Michigan
|
23,406
|
| 62 |
Osceola County, Michigan
|
23,276
|
| 63 |
Leelanau County, Michigan
|
21,607
|
| 64 |
Ogemaw County, Michigan
|
21,437
|
| 65 |
Benzie County, Michigan
|
17,465
|
| 66 |
Kalkaska County, Michigan
|
17,099
|
| 67 |
Gogebic County, Michigan
|
16,084
|
| 68 |
Arenac County, Michigan
|
15,477
|
| 69 |
Missaukee County, Michigan
|
15,031
|
| 70 |
Crawford County, Michigan
|
14,009
|
| 71 |
Presque Isle County, Michigan
|
13,129
|
| 72 |
Iron County, Michigan
|
11,587
|
| 73 |
Lake County, Michigan
|
11,498
|
| 74 |
Mackinac County, Michigan
|
11,137
|
| 75 |
Alcona County, Michigan
|
10,635
|
| 76 |
Alger County, Michigan
|
9,541
|
| 77 |
Montmorency County, Michigan
|
9,476
|
| 78 |
Baraga County, Michigan
|
8,683
|
| 79 |
Oscoda County, Michigan
|
8,592
|
| 80 |
Schoolcraft County, Michigan
|
8,343
|
| 81 |
Luce County, Michigan
|
6,522
|
| 82 |
Ontonagon County, Michigan
|
6,413
|
| 83 |
Keweenaw County, Michigan
|
2,215
|