Indiana Counties by Population

The most populated counties in Indiana are Marion County with 968,460, Lake County at 500,598, Allen County with 394,545, Hamilton County at 371,645, and St. Joseph County with 272,848. 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 2023 Population Estimates Program.

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Rank County Population
1 Marion County 968,460
2 Lake County 500,598
3 Allen County 394,545
4 Hamilton County 371,645
5 St. Joseph County 272,848
6 Elkhart County 206,409
7 Tippecanoe County 188,792
8 Hendricks County 186,387
9 Vanderburgh County 179,810
10 Porter County 175,335
11 Johnson County 167,819
12 Monroe County 139,342
13 Madison County 132,504
14 Clark County 125,467
15 Delaware County 112,321
16 LaPorte County 111,706
17 Vigo County 106,153
18 Hancock County 86,166
19 Bartholomew County 84,003
20 Howard County 83,831
21 Floyd County 80,809
22 Kosciusko County 80,364
23 Boone County 76,120
24 Morgan County 73,227
25 Grant County 66,200
26 Wayne County 66,127
27 Warrick County 65,867
28 Dearborn County 51,215
29 Henry County 48,929
30 Noble County 47,430
31 Jackson County 46,460
32 Marshall County 46,352
33 Shelby County 45,231
34 Lawrence County 45,084
35 DeKalb County 44,198
36 Dubois County 43,546
37 LaGrange County 40,907
38 Harrison County 40,006
39 Montgomery County 38,573
40 Cass County 37,666
41 Putnam County 37,567
42 Huntington County 36,781
43 Adams County 36,288
44 Knox County 36,070
45 Miami County 35,402
46 Steuben County 34,917
47 Whitley County 34,742
48 Daviess County 33,656
49 Jasper County 33,535
50 Jefferson County 33,056
51 Gibson County 32,904
52 Clinton County 32,730
53 Greene County 31,196
54 Wabash County 30,670
55 Ripley County 29,227
56 Wells County 28,555
57 Washington County 28,205
58 Jennings County 27,622
59 Clay County 26,460
60 Decatur County 26,399
61 Posey County 25,040
62 White County 24,917
63 Scott County 24,657
64 Randolph County 24,216
65 Fayette County 23,362
66 Starke County 23,206
67 Franklin County 23,096
68 Owen County 21,532
69 Sullivan County 20,757
70 Carroll County 20,525
71 Fulton County 20,358
72 Jay County 20,032
73 Spencer County 19,910
74 Orange County 19,638
75 Perry County 19,209
76 Rush County 16,847
77 Fountain County 16,731
78 Parke County 16,484
79 Brown County 15,653
80 Vermillion County 15,417
81 Tipton County 15,256
82 Newton County 13,960
83 Pulaski County 12,385
84 Pike County 12,106
85 Blackford County 11,893
86 Crawford County 10,438
87 Switzerland County 10,019
88 Martin County 9,897
89 Benton County 8,729
90 Warren County 8,518
91 Union County 6,973
92 Ohio County 6,004

United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2020 to July 1, 2023. U.S. Census Bureau, Population Division. Web. May 2024. http://www.census.gov/.

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