Ranking of Indiana Counties By Population in 2021

Updated on August 1, 2024.

Based on the US Census Vintage data estimates, in 2021, the Population for Indiana was 6.81M. Among all Indiana counties, Marion County had the highest population (971.54K), followed by Lake County (499.26K), and Allen County (389.16K).

The chart below shows the top 10 counties, and the table below shows the ranking of all Indiana counties.

You can see similar ranking information for related topics, and for other states. You can also see the ranking of all counties in the United States.

See this for other years:
Ranking of Indiana Counties By Population in 2021
Marion
Lake
Allen
Hamilton
St. Joseph
Elkhart
Tippecanoe
Vanderburgh
Hendricks
Porter
Ranking of Indiana Counties By Population in 2021
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Rank County Population
1 Marion County 971543
2 Lake County 499257
3 Allen County 389163
4 Hamilton County 357620
5 St. Joseph County 272286
6 Elkhart County 207054
7 Tippecanoe County 187423
8 Vanderburgh County 180165
9 Hendricks County 179800
10 Porter County 174551
11 Johnson County 164394
12 Monroe County 140176
13 Madison County 130841
14 Clark County 122895
15 LaPorte County 112513
16 Delaware County 112057
17 Vigo County 106116
18 Howard County 83650
19 Bartholomew County 82729
20 Hancock County 81891
21 Floyd County 80595
22 Kosciusko County 80237
23 Boone County 73080
24 Morgan County 72275
25 Wayne County 66435
26 Grant County 66188
27 Warrick County 64657
28 Dearborn County 50875
29 Henry County 49024
30 Noble County 47392
31 Jackson County 46224
32 Marshall County 46160
33 Shelby County 45101
34 Lawrence County 45066
35 Dubois County 43565
36 DeKalb County 43395
37 LaGrange County 40527
38 Harrison County 39805
39 Montgomery County 38057
40 Cass County 37558
41 Putnam County 37043
42 Huntington County 36788
43 Miami County 35999
44 Adams County 35991
45 Knox County 35976
46 Steuben County 34702
47 Whitley County 34470
48 Daviess County 33396
49 Jasper County 33165
50 Jefferson County 33117
51 Clinton County 32983
52 Gibson County 32965
53 Wabash County 30893
54 Greene County 30862
55 Ripley County 29015
56 Wells County 28154
57 Washington County 28138
58 Jennings County 27513
59 Clay County 26394
60 Decatur County 26353
61 Posey County 25165
62 White County 24643
63 Scott County 24422
64 Randolph County 24409
65 Fayette County 23381
66 Starke County 23373
67 Franklin County 22889
68 Owen County 21514
69 Sullivan County 20777
70 Carroll County 20525
71 Fulton County 20412
72 Jay County 20282
73 Spencer County 19841
74 Orange County 19806
75 Perry County 19334
76 Rush County 16679
77 Parke County 16486
78 Fountain County 16480
79 Brown County 15592
80 Vermillion County 15435
81 Tipton County 15394
82 Newton County 13820
83 Pulaski County 12360
84 Pike County 12170
85 Blackford County 12041
86 Crawford County 10491
87 Switzerland County 9869
88 Martin County 9804
89 Benton County 8686
90 Warren County 8449
91 Union County 7018
92 Ohio County 5994