Indiana Counties by Population

The most populated counties in Indiana are Marion County with 971,737, Lake County at 497,682, Allen County with 385,456, Hamilton County at 349,527, and St. Joseph County with 272,388. You can get the most current Census population data for all 92 Indiana counties, sorted from the most populous counties in Indiana to the least, according to the 2022 American Community Survey.

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Rank County Population
1 Marion County 971,737
2 Lake County 497,682
3 Allen County 385,456
4 Hamilton County 349,527
5 St. Joseph County 272,388
6 Elkhart County 206,841
7 Tippecanoe County 186,955
8 Vanderburgh County 179,900
9 Hendricks County 175,639
10 Porter County 173,355
11 Johnson County 161,952
12 Monroe County 140,065
13 Madison County 130,545
14 Clark County 121,484
15 LaPorte County 112,215
16 Delaware County 112,156
17 Vigo County 106,355
18 Howard County 83,452
19 Bartholomew County 82,371
20 Kosciusko County 80,442
21 Floyd County 80,191
22 Hancock County 80,170
23 Morgan County 71,757
24 Boone County 71,235
25 Grant County 66,560
26 Wayne County 66,522
27 Warrick County 64,065
28 Dearborn County 50,709
29 Henry County 48,913
30 Noble County 47,431
31 Jackson County 46,212
32 Marshall County 46,208
33 Lawrence County 45,113
34 Shelby County 44,940
35 Dubois County 43,584
36 DeKalb County 43,312
37 LaGrange County 40,364
38 Harrison County 39,684
39 Montgomery County 38,018
40 Cass County 37,820
41 Putnam County 36,942
42 Huntington County 36,699
43 Knox County 36,148
44 Miami County 35,952
45 Adams County 35,827
46 Steuben County 34,507
47 Whitley County 34,259
48 Daviess County 33,337
49 Jefferson County 33,057
50 Jasper County 33,045
51 Clinton County 33,020
52 Gibson County 33,006
53 Wabash County 31,032
54 Greene County 30,900
55 Ripley County 28,990
56 Wells County 28,167
57 Washington County 28,133
58 Jennings County 27,610
59 Decatur County 26,432
60 Clay County 26,396
61 Posey County 25,226
62 White County 24,630
63 Randolph County 24,586
64 Scott County 24,403
65 Fayette County 23,391
66 Starke County 23,308
67 Franklin County 22,850
68 Owen County 21,361
69 Sullivan County 20,791
70 Jay County 20,451
71 Fulton County 20,420
72 Carroll County 20,397
73 Spencer County 19,935
74 Orange County 19,768
75 Perry County 19,186
76 Rush County 16,716
77 Fountain County 16,468
78 Parke County 16,327
79 Brown County 15,513
80 Vermillion County 15,488
81 Tipton County 15,328
82 Newton County 13,829
83 Pulaski County 12,498
84 Pike County 12,227
85 Blackford County 12,074
86 Crawford County 10,511
87 Switzerland County 9,896
88 Martin County 9,863
89 Benton County 8,709
90 Warren County 8,454
91 Union County 7,041
92 Ohio County 5,974

United States Census Bureau. B01001 SEX BY AGE, 2022 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 7 December 2023. http://www.census.gov/.

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