Most Diverse Counties in America

US counties ranked by racial and ethnic diversity index. A score closer to 1.0 means a nearly equal mix of groups; a score near 0 means one group dominates. Data from US Census Bureau ACS 2023.

Ranked by Diversity Index. Click any location to see its full Census data profile. All figures are from the U.S. Census Bureau ACS 5-Year Estimates, 2023, so they are directly comparable across locations.

#	Location	Diversity Index
1	Montgomery County, New York	0
2	Grundy County, Missouri	0.5
3	George County, Mississippi	0
4	Butler County, Kentucky	0
5	Fairfield County, Ohio	0.012
6	Howard County, Texas	0.091
7	Montgomery County, Ohio	0.057
8	Chautauqua County, Kansas	0.211
9	Wayne County, Ohio	0.071
10	Irion County, Texas	0.108
11	Valencia County, New Mexico	0.067
12	Henry County, Ohio	0.174
13	Kusilvak Census Area, Alaska	0.245
14	Hartley County, Texas	0.129
15	Orocovis Municipio, Puerto Rico	0.073
16	Henderson County, Texas	0.123
17	Glacier County, Montana	0.175
18	O'Brien County, Iowa	0.247
19	Patillas Municipio, Puerto Rico	-0.531
20	Essex County, New York	0.101
21	Garfield County, Colorado	0.391
22	Hill County, Texas	0.354
23	Hockley County, Texas	0.212
24	Simpson County, Kentucky	0.236
25	Yabucoa Municipio, Puerto Rico	-0.522
26	Hopkins County, Texas	0.24
27	Muscatine County, Iowa	0.306
28	Pocahontas County, Iowa	0.24
29	Hood County, Texas	0.267
30	Maunabo Municipio, Puerto Rico	-0.446
31	Rio Grande County, Colorado	0.146
32	Harrison County, Texas	0.266
33	Richland County, Montana	0.417
34	Dent County, Missouri	0.256
35	Hidalgo County, Texas	0.227
36	Rio Blanco County, Colorado	0.469
37	Russell County, Kentucky	0.366
38	Polk County, Iowa	0.373
39	Morgan County, Ohio	0.199
40	Mitchell County, Iowa	0.347
41	Letcher County, Kentucky	0.366
42	Monona County, Iowa	0.345
43	Hamilton County, Iowa	0.347
44	Sioux County, North Dakota	0.289
45	Menominee County, Wisconsin	0.333
46	Woodford County, Kentucky	0.374
47	Rensselaer County, New York	0.293
48	Taylor County, Kentucky	0.339
49	Delaware County, Ohio	0.299
50	Vieques Municipio, Puerto Rico	-0.513