Ranking of Indiana Counties By Population with American Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 494.35K people in Indiana with American ancestry. Among all Indiana counties, Marion County had the highest population with American ancestry (48.81K), followed by Hendricks County (25.87K), and Allen County (23.66K).

The chart and table below shows the top 10 counties with high number of people with American ancestry.

You can see similar information for other states and for other ancestry groups in Indiana.

Data Source: US Census Bureau.
Ranking of Indiana Counties By Population with American Ancestry in 2021
Marion County
Hendricks County
Allen County
Hamilton County
Johnson County
Elkhart County
Madison County
St. Joseph County
Lake County
Vanderburgh County
Ranking of Indiana Counties By Population with American Ancestry in 2021
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Rank County Population
1 Marion County 48812
2 Hendricks County 25871
3 Allen County 23663
4 Hamilton County 22590
5 Johnson County 20392
6 Elkhart County 14002
7 Madison County 13221
8 St. Joseph County 11190
9 Lake County 11137
10 Vanderburgh County 11120
11 Delaware County 10890
12 Boone County 10656
13 Tippecanoe County 9099
14 Howard County 8816
15 Clark County 8780
16 Morgan County 8399
17 Vigo County 7814
18 Monroe County 7777
19 Hancock County 7309
20 Bartholomew County 7232
21 Grant County 6970
22 Shelby County 6399
23 Porter County 6393
24 Kosciusko County 6377
25 Floyd County 6197
26 Henry County 5886
27 Jackson County 5829
28 Wayne County 5732
29 Dearborn County 5268
30 Lawrence County 4765
31 LaPorte County 4590
32 LaGrange County 4246
33 Warrick County 4147
34 Harrison County 3999
35 Jennings County 3848
36 Marshall County 3760
37 Washington County 3757
38 DeKalb County 3742
39 Montgomery County 3699
40 Putnam County 3671
41 Noble County 3579
42 Jefferson County 3413
43 Huntington County 3277
44 Steuben County 3203
45 Clinton County 3199
46 Adams County 3151
47 Wabash County 3120
48 Gibson County 3079
49 Fayette County 3066
50 Knox County 2973
51 Whitley County 2932
52 Ripley County 2900
53 Dubois County 2897
54 Cass County 2871
55 Decatur County 2856
56 Greene County 2774
57 Randolph County 2734
58 Daviess County 2717
59 Miami County 2544
60 Clay County 2387
61 Owen County 2309
62 Wells County 2251
63 Franklin County 2141
64 Orange County 2133
65 Carroll County 2120
66 Scott County 2065
67 Sullivan County 1940
68 Brown County 1891
69 Fountain County 1829
70 Parke County 1812
71 Rush County 1730
72 Perry County 1705
73 White County 1603
74 Posey County 1593
75 Tipton County 1563
76 Spencer County 1560
77 Jasper County 1555
78 Jay County 1444
79 Starke County 1432
80 Fulton County 1381
81 Vermillion County 1301
82 Pike County 1163
83 Blackford County 1117
84 Switzerland County 1086
85 Warren County 973
86 Newton County 875
87 Crawford County 849
88 Martin County 785
89 Union County 722
90 Benton County 659
91 Pulaski County 574
92 Ohio County 474