CensusEasy
RANKING · 2010 CENSUS · 99 SHOWN OF 99

Least racially diverse, Iowa counties · 2010

Iowa counties with the lowest CensusEasy Diversity Score, where most residents share the same race or ethnicity (2023 ACS). This list covers the 99 counties in Iowa that qualify, ranked against each other statewide.

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SAME RANKING BYCitiesStatesMetrosZIP codes
RELATEDOldest by median ageYoungest by median ageMost foreign-born residentsHighest uninsured rateMost womenMost men
YEAR19902000201020202024
Least racially diverse by state
All USAlaskaAlabamaArkansasArizonaCaliforniaColoradoFloridaGeorgiaIowaIdahoIllinoisIndianaKansasKentuckyLouisianaMassachusettsMarylandMaineMichiganMinnesotaMissouriMississippiMontanaNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew MexicoNevadaNew YorkOhioOklahomaOregonPennsylvaniaSouth CarolinaSouth DakotaTennesseeTexasUtahVirginiaVermontWashingtonWisconsinWest VirginiaWyoming
RANKPLACESTATEPOPDIVERSITY SCOREVS 2000
01Davis County, IAIA9,2304+50%
02Mitchell County, IAIA10,6504+95%
03Audubon County, IAIA5,5095+139%
04Butler County, IAIA14,0495+135%
05Dickinson County, IAIA18,0776+135%
06Lucas County, IAIA8,8476+81%
07Grundy County, IAIA12,3616+153%
08Adams County, IAIA3,6176+199%
09Keokuk County, IAIA9,7976+201%
10Howard County, IAIA9,4156+200%
11Wayne County, IAIA6,7386+176%
12Sac County, IAIA9,5256+90%
13Greene County, IAIA8,6586+29%
14Buchanan County, IAIA20,8836+103%
15Calhoun County, IAIA9,5627+49%
16Kossuth County, IAIA14,3227+110%
17Palo Alto County, IAIA8,8997+133%
18Harrison County, IAIA14,6237+182%
19Delaware County, IAIA17,6747+219%
20Van Buren County, IAIA7,1317+154%
21Lyon County, IAIA12,3547+386%
22Shelby County, IAIA11,6897+169%
23Ringgold County, IAIA4,6427+448%
24Worth County, IAIA7,3387+45%
25Adair County, IAIA7,4037+184%
26Appanoose County, IAIA12,0777+73%
27Ida County, IAIA6,7777+259%
28Benton County, IAIA26,0047+204%
29Cass County, IAIA12,9608+198%
30Guthrie County, IAIA10,7828+136%
31Jackson County, IAIA19,2888+309%
32Madison County, IAIA17,2708+218%
33Chickasaw County, IAIA11,6638+248%
34Bremer County, IAIA25,2969+130%
35Cedar County, IAIA18,3599+158%
36Monona County, IAIA8,5399+305%
37Iowa County, IAIA16,5049+157%
38Carroll County, IAIA20,3039+254%
39Union County, IAIA11,8299+148%
40Clayton County, IAIA16,8459+275%
41Pocahontas County, IAIA6,8199+191%
42Warren County, IAIA57,33110+123%
43Boone County, IAIA26,79910+189%
44Jasper County, IAIA38,15310+80%
45Fayette County, IAIA19,04710+75%
46Winneshiek County, IAIA19,73310+98%
47Monroe County, IAIA7,40610+281%
48Mills County, IAIA14,79311+135%
49Montgomery County, IAIA10,00211+162%
50Marion County, IAIA34,19211+94%
51Fremont County, IAIA6,52211+86%
52Cherokee County, IAIA11,36911+166%
53Jones County, IAIA21,25312+56%
54Plymouth County, IAIA25,69712+169%
55Mahaska County, IAIA21,88012+114%
56Clay County, IAIA16,20212+137%
57Decatur County, IAIA7,65513+60%
58Floyd County, IAIA14,90113+172%
59Hancock County, IAIA10,52814+98%
60O'Brien County, IAIA14,22015+129%
61Winnebago County, IAIA10,25115+106%
62Humboldt County, IAIA9,40915+370%
63Hardin County, IAIA16,45515+87%
64Allamakee County, IAIA14,23815+60%
65Poweshiek County, IAIA18,36816+126%
66Page County, IAIA14,85617+83%
67Taylor County, IAIA5,83517+65%
68Clinton County, IAIA46,00217+91%
69Washington County, IAIA22,66718+124%
70Dubuque County, IAIA99,38118+182%
71Cerro Gordo County, IAIA42,37218+78%
72Osceola County, IAIA5,98019+264%
73Hamilton County, IAIA14,94419+147%
74Lee County, IAIA32,30620+50%
75Emmet County, IAIA9,10723+95%
76Webster County, IAIA36,83823+50%
77Des Moines County, IAIA38,07724+67%
78Pottawattamie County, IAIA92,99624+115%
79Sioux County, IAIA36,77424+199%
80Henry County, IAIA19,34924+117%
81Linn County, IAIA232,02824+88%
82Clarke County, IAIA9,57426+138%
83Dallas County, IAIA118,45726+62%
84Wright County, IAIA12,80126+110%
85Wapello County, IAIA35,21028+206%
86Story County, IAIA101,29129+46%
87Franklin County, IAIA9,86829+99%
88Jefferson County, IAIA15,29132+213%
89Tama County, IAIA16,79635+227%
90Black Hawk County, IAIA131,53235+42%
91Johnson County, IAIA160,04437+65%
92Scott County, IAIA175,25937+38%
93Louisa County, IAIA10,41640+40%
94Muscatine County, IAIA41,85340+36%
95Polk County, IAIA516,54642+52%
96Marshall County, IAIA39,89044+82%
97Woodbury County, IAIA106,64947+50%
98Crawford County, IAIA16,23750+121%
99Buena Vista County, IAIA20,44961+63%
SHOWING 1–99 OF 99
Download CSV (full list, 99 rows)How this score is calculated

UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES