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RANKING · 2010 CENSUS · 99 SHOWN OF 99

Highest Black population share, Iowa counties · 2010

Iowa counties ranked by the share of all residents who are Black or African American (2010 American Community Survey). A concentration measure: Black residents as a percentage of total population. This list covers the 99 counties in Iowa that qualify, ranked against each other statewide. The median across all 99 is 0.4%.

Highest Black population share by state
All USAlaskaAlabamaArkansasArizonaCaliforniaColoradoFloridaGeorgiaIowaIdahoIllinoisIndianaKansasKentuckyLouisianaMassachusettsMarylandMaineMichiganMinnesotaMissouriMississippiMontanaNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew MexicoNevadaNew YorkOhioOklahomaOregonPennsylvaniaSouth CarolinaSouth DakotaTennesseeTexasUtahVirginiaVermontWashingtonWisconsinWest VirginiaWyoming
RANKPLACESTATEPOPBLACKVS 2000
01Black Hawk County, IAIA131,5328.8%+0.9 pts
02Scott County, IAIA175,2596.9%+0.9 pts
03Polk County, IAIA516,5465.9%+1.1 pts
04Des Moines County, IAIA38,0775.0%+1.5 pts
05Johnson County, IAIA160,0444.7%+1.9 pts
06Linn County, IAIA232,0283.9%+1.3 pts
07Webster County, IAIA36,8383.8%+0.4 pts
08Lee County, IAIA32,3063.1%+0.3 pts
09Dubuque County, IAIA99,3812.6%+1.8 pts
10Clinton County, IAIA46,0022.6%+0.7 pts
11Buena Vista County, IAIA20,4492.5%+2.2 pts
12Story County, IAIA101,2912.4%+0.6 pts
13Woodbury County, IAIA106,6492.3%+0.4 pts
14Henry County, IAIA19,3492.2%+0.7 pts
15Page County, IAIA14,8562.2%+0.5 pts
16Jones County, IAIA21,2532.0%+0.2 pts
17Decatur County, IAIA7,6551.8%+0.9 pts
18Marshall County, IAIA39,8901.5%+0.7 pts
19Dallas County, IAIA118,4571.3%+0.7 pts
20Pottawattamie County, IAIA92,9961.3%+0.6 pts
21Muscatine County, IAIA41,8531.3%+0.6 pts
22Jasper County, IAIA38,1531.3%+0.4 pts
23Cerro Gordo County, IAIA42,3721.3%+0.5 pts
24Wapello County, IAIA35,2101.3%+0.3 pts
25Floyd County, IAIA14,9011.2%+1.0 pts
26Hardin County, IAIA16,4551.2%+0.6 pts
27Jefferson County, IAIA15,2911.2%+0.6 pts
28Crawford County, IAIA16,2371.1%+0.5 pts
29Poweshiek County, IAIA18,3681.1%+0.6 pts
30Mahaska County, IAIA21,8801.1%+0.5 pts
31Fayette County, IAIA19,0470.9%+0.4 pts
32Boone County, IAIA26,7990.8%+0.5 pts
33Bremer County, IAIA25,2960.8%+0.3 pts
34Allamakee County, IAIA14,2380.8%+0.6 pts
35Winnebago County, IAIA10,2510.7%+0.5 pts
36Union County, IAIA11,8290.7%+0.5 pts
37Washington County, IAIA22,6670.6%+0.4 pts
38Marion County, IAIA34,1920.6%+0.2 pts
39Winneshiek County, IAIA19,7330.6%+0.1 pts
40Emmet County, IAIA9,1070.6%+0.4 pts
41Cherokee County, IAIA11,3690.5%+0.2 pts
42Keokuk County, IAIA9,7970.5%+0.4 pts
43Palo Alto County, IAIA8,8990.5%+0.4 pts
44Warren County, IAIA57,3310.5%+0.2 pts
45Louisa County, IAIA10,4160.5%+0.2 pts
46Hancock County, IAIA10,5280.4%+0.4 pts
47Fremont County, IAIA6,5220.4%+0.4 pts
48Appanoose County, IAIA12,0770.4%0.0 pts
49Clarke County, IAIA9,5740.4%+0.3 pts
50Clay County, IAIA16,2020.4%+0.2 pts
51Humboldt County, IAIA9,4090.4%+0.3 pts
52Carroll County, IAIA20,3030.4%+0.2 pts
53O'Brien County, IAIA14,2200.4%+0.1 pts
54Mills County, IAIA14,7930.4%+0.1 pts
55Monona County, IAIA8,5390.4%+0.3 pts
56Benton County, IAIA26,0040.4%+0.2 pts
57Pocahontas County, IAIA6,8190.4%+0.1 pts
58Tama County, IAIA16,7960.3%+0.1 pts
59Ringgold County, IAIA4,6420.3%+0.2 pts
60Clayton County, IAIA16,8450.3%+0.2 pts
61Iowa County, IAIA16,5040.3%+0.2 pts
62Sioux County, IAIA36,7740.3%+0.1 pts
63Wright County, IAIA12,8010.3%+0.2 pts
64Sac County, IAIA9,5250.3%0.0 pts
65Jackson County, IAIA19,2880.3%+0.2 pts
66Plymouth County, IAIA25,6970.3%0.0 pts
67Madison County, IAIA17,2700.3%+0.2 pts
68Buchanan County, IAIA20,8830.3%0.0 pts
69Cedar County, IAIA18,3590.3%+0.1 pts
70Kossuth County, IAIA14,3220.3%+0.2 pts
71Worth County, IAIA7,3380.3%0.0 pts
72Monroe County, IAIA7,4060.3%+0.1 pts
73Wayne County, IAIA6,7380.3%+0.2 pts
74Howard County, IAIA9,4150.3%+0.2 pts
75Hamilton County, IAIA14,9440.3%0.0 pts
76Shelby County, IAIA11,6890.3%+0.2 pts
77Delaware County, IAIA17,6740.3%+0.2 pts
78Ida County, IAIA6,7770.2%+0.1 pts
79Cass County, IAIA12,9600.2%0.0 pts
80Greene County, IAIA8,6580.2%+0.1 pts
81Chickasaw County, IAIA11,6630.2%+0.2 pts
82Montgomery County, IAIA10,0020.2%+0.2 pts
83Osceola County, IAIA5,9800.2%+0.1 pts
84Grundy County, IAIA12,3610.2%+0.1 pts
85Adams County, IAIA3,6170.2%+0.2 pts
86Van Buren County, IAIA7,1310.2%+0.1 pts
87Calhoun County, IAIA9,5620.2%−0.5 pts
88Taylor County, IAIA5,8350.2%+0.2 pts
89Mitchell County, IAIA10,6500.2%0.0 pts
90Franklin County, IAIA9,8680.2%+0.1 pts
91Dickinson County, IAIA18,0770.2%+0.1 pts
92Lucas County, IAIA8,8470.2%0.0 pts
93Butler County, IAIA14,0490.2%+0.1 pts
94Harrison County, IAIA14,6230.2%+0.1 pts
95Audubon County, IAIA5,5090.1%0.0 pts
96Guthrie County, IAIA10,7820.1%0.0 pts
97Adair County, IAIA7,4030.1%+0.1 pts
98Davis County, IAIA9,2300.1%−0.1 pts
99Lyon County, IAIA12,3540.1%0.0 pts
SHOWING 1–99 OF 99

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS