Ranking of Indiana Counties By Population with Unclassified Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 2.00M people in Indiana with Unclassified ancestry. Among all Indiana counties, Marion County had the highest population with Unclassified ancestry (258.12K), followed by Lake County (99.66K), and Allen County (93.94K).

The chart and table below shows the top 10 counties with high number of people with Unclassified 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 Unclassified Ancestry in 2021
Marion County
Lake County
Allen County
Hamilton County
St. Joseph County
Elkhart County
Hendricks County
Tippecanoe County
Johnson County
Vanderburgh County
Ranking of Indiana Counties By Population with Unclassified Ancestry in 2021
0 of 0
Rank County Population
1 Marion County 258117
2 Lake County 99656
3 Allen County 93943
4 Hamilton County 77579
5 St. Joseph County 66484
6 Elkhart County 61143
7 Hendricks County 57063
8 Tippecanoe County 55305
9 Johnson County 54533
10 Vanderburgh County 52156
11 Monroe County 43255
12 Porter County 43086
13 Vigo County 40018
14 Madison County 39629
15 Delaware County 36714
16 Clark County 36225
17 Morgan County 31784
18 LaPorte County 31763
19 Howard County 27762
20 Bartholomew County 25269
21 Floyd County 24856
22 Hancock County 24132
23 Grant County 23849
24 Kosciusko County 23718
25 Wayne County 23170
26 Boone County 19840
27 Henry County 18661
28 Shelby County 17442
29 Lawrence County 17418
30 Marshall County 17390
31 Putnam County 17254
32 Warrick County 16164
33 Knox County 16160
34 Harrison County 14641
35 Dearborn County 14212
36 Adams County 13882
37 Jackson County 13825
38 Cass County 13702
39 DeKalb County 13424
40 Daviess County 13383
41 Montgomery County 13224
42 Clinton County 12859
43 Noble County 12739
44 Miami County 12707
45 Gibson County 12594
46 Huntington County 12433
47 Greene County 12335
48 Clay County 11359
49 Scott County 10905
50 Jefferson County 10810
51 Washington County 10640
52 Starke County 10104
53 Ripley County 10051
54 Whitley County 9938
55 Jasper County 9870
56 Wells County 9721
57 Wabash County 9482
58 Posey County 9305
59 Owen County 9112
60 Decatur County 9046
61 Steuben County 9002
62 Dubois County 8907
63 Sullivan County 8771
64 White County 8714
65 Carroll County 8627
66 Fayette County 8619
67 Randolph County 8555
68 Jay County 8487
69 Jennings County 8482
70 Franklin County 8413
71 LaGrange County 8238
72 Fulton County 8198
73 Orange County 8066
74 Fountain County 6256
75 Rush County 6127
76 Vermillion County 6036
77 Parke County 5790
78 Brown County 5351
79 Tipton County 5082
80 Perry County 4961
81 Spencer County 4866
82 Blackford County 4856
83 Pulaski County 4679
84 Martin County 4355
85 Newton County 4102
86 Switzerland County 3776
87 Crawford County 3769
88 Pike County 3461
89 Warren County 3380
90 Benton County 2986
91 Union County 2460
92 Ohio County 2123