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RANKING · 2024 ACS · 99 SHOWN OF 99

Highest Black population share, Iowa counties

Iowa counties ranked by the share of all residents who are Black or African American (2024 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.

Highest Black population share by state
All USAlaskaAlabamaArkansasArizonaCaliforniaColoradoFloridaGeorgiaIowaIdahoIllinoisIndianaKansasKentuckyLouisianaMassachusettsMarylandMaineMichiganMinnesotaMissouriMississippiMontanaNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew MexicoNevadaNew YorkOhioOklahomaOregonPennsylvaniaSouth CarolinaSouth DakotaTennesseeTexasUtahVirginiaVermontWashingtonWisconsinWest VirginiaWyoming
RANKPLACESTATEPOPBLACKVS 2000
01Black Hawk County, IAIA131,5329.1%+1.2 pts
02Johnson County, IAIA160,0447.6%+4.8 pts
03Polk County, IAIA516,5467.3%+2.5 pts
04Scott County, IAIA175,2597.1%+1.1 pts
05Linn County, IAIA232,0285.9%+3.3 pts
06Woodbury County, IAIA106,6494.9%+2.9 pts
07Des Moines County, IAIA38,0774.7%+1.2 pts
08Buena Vista County, IAIA20,4493.3%+3.0 pts
09Webster County, IAIA36,8383.3%−0.1 pts
10Clinton County, IAIA46,0023.1%+1.2 pts
11Wapello County, IAIA35,2103.0%+2.1 pts
12Dallas County, IAIA118,4573.0%+2.3 pts
13Dubuque County, IAIA99,3812.9%+2.1 pts
14Story County, IAIA101,2912.7%+0.9 pts
15Henry County, IAIA19,3492.5%+1.1 pts
16Jones County, IAIA21,2532.5%+0.7 pts
17Jefferson County, IAIA15,2912.4%+1.8 pts
18Lee County, IAIA32,3062.4%−0.4 pts
19Plymouth County, IAIA25,6972.4%+2.1 pts
20Muscatine County, IAIA41,8532.2%+1.6 pts
21Winnebago County, IAIA10,2512.0%+1.8 pts
22Cerro Gordo County, IAIA42,3721.9%+1.1 pts
23Pottawattamie County, IAIA92,9961.8%+1.1 pts
24Allamakee County, IAIA14,2381.8%+1.7 pts
25Montgomery County, IAIA10,0021.8%+1.7 pts
26Page County, IAIA14,8561.7%+0.1 pts
27O'Brien County, IAIA14,2201.7%+1.4 pts
28Palo Alto County, IAIA8,8991.6%+1.5 pts
29Calhoun County, IAIA9,5621.6%+0.9 pts
30Emmet County, IAIA9,1071.6%+1.4 pts
31Marshall County, IAIA39,8901.6%+0.7 pts
32Jasper County, IAIA38,1531.5%+0.7 pts
33Adair County, IAIA7,4031.4%+1.4 pts
34Floyd County, IAIA14,9011.4%+1.1 pts
35Decatur County, IAIA7,6551.3%+0.4 pts
36Monroe County, IAIA7,4061.2%+1.0 pts
37Boone County, IAIA26,7991.2%+0.8 pts
38Mahaska County, IAIA21,8801.1%+0.5 pts
39Bremer County, IAIA25,2961.1%+0.6 pts
40Hardin County, IAIA16,4551.1%+0.5 pts
41Washington County, IAIA22,6671.0%+0.8 pts
42Jackson County, IAIA19,2881.0%+0.9 pts
43Cherokee County, IAIA11,3691.0%+0.7 pts
44Hamilton County, IAIA14,9441.0%+0.7 pts
45Poweshiek County, IAIA18,3680.9%+0.4 pts
46Tama County, IAIA16,7960.9%+0.7 pts
47Cass County, IAIA12,9600.9%+0.7 pts
48Louisa County, IAIA10,4160.9%+0.7 pts
49Crawford County, IAIA16,2370.9%+0.2 pts
50Howard County, IAIA9,4150.8%+0.7 pts
51Appanoose County, IAIA12,0770.8%+0.4 pts
52Worth County, IAIA7,3380.8%+0.5 pts
53Fayette County, IAIA19,0470.8%+0.3 pts
54Union County, IAIA11,8290.8%+0.5 pts
55Madison County, IAIA17,2700.7%+0.7 pts
56Kossuth County, IAIA14,3220.7%+0.6 pts
57Franklin County, IAIA9,8680.7%+0.6 pts
58Pocahontas County, IAIA6,8190.7%+0.4 pts
59Warren County, IAIA57,3310.7%+0.4 pts
60Clayton County, IAIA16,8450.6%+0.5 pts
61Buchanan County, IAIA20,8830.6%+0.3 pts
62Sioux County, IAIA36,7740.6%+0.4 pts
63Grundy County, IAIA12,3610.6%+0.5 pts
64Guthrie County, IAIA10,7820.6%+0.4 pts
65Chickasaw County, IAIA11,6630.5%+0.5 pts
66Audubon County, IAIA5,5090.5%+0.4 pts
67Osceola County, IAIA5,9800.5%+0.4 pts
68Carroll County, IAIA20,3030.5%+0.3 pts
69Sac County, IAIA9,5250.5%+0.2 pts
70Hancock County, IAIA10,5280.4%+0.4 pts
71Wright County, IAIA12,8010.4%+0.3 pts
72Van Buren County, IAIA7,1310.4%+0.4 pts
73Cedar County, IAIA18,3590.4%+0.2 pts
74Marion County, IAIA34,1920.4%+0.0 pts
75Winneshiek County, IAIA19,7330.4%−0.1 pts
76Mills County, IAIA14,7930.4%+0.1 pts
77Benton County, IAIA26,0040.4%+0.2 pts
78Ringgold County, IAIA4,6420.4%+0.3 pts
79Lyon County, IAIA12,3540.4%+0.3 pts
80Fremont County, IAIA6,5220.4%+0.3 pts
81Mitchell County, IAIA10,6500.3%+0.2 pts
82Humboldt County, IAIA9,4090.3%+0.3 pts
83Iowa County, IAIA16,5040.3%+0.2 pts
84Shelby County, IAIA11,6890.3%+0.2 pts
85Ida County, IAIA6,7770.3%+0.2 pts
86Adams County, IAIA3,6170.3%+0.3 pts
87Lucas County, IAIA8,8470.3%+0.2 pts
88Clay County, IAIA16,2020.3%+0.1 pts
89Keokuk County, IAIA9,7970.3%+0.2 pts
90Monona County, IAIA8,5390.2%+0.2 pts
91Wayne County, IAIA6,7380.2%+0.1 pts
92Taylor County, IAIA5,8350.2%+0.1 pts
93Butler County, IAIA14,0490.2%+0.1 pts
94Harrison County, IAIA14,6230.1%+0.0 pts
95Greene County, IAIA8,6580.1%−0.0 pts
96Delaware County, IAIA17,6740.1%+0.0 pts
97Clarke County, IAIA9,5740.1%−0.1 pts
98Dickinson County, IAIA18,0770.0%−0.1 pts
99Davis County, IAIA9,2300.0%−0.2 pts
SHOWING 1–99 OF 99

UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES