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
|