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RANKING · 2020 CENSUS · 99 SHOWN OF 99

Highest Mexican population share, Iowa counties · 2020

Iowa counties ranked by the share of all residents who are Mexican origin (2020 American Community Survey). A concentration measure: Mexican 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 2.4%.

Mexican Americans: full group profile →
SAME RANKING BYCitiesStatesMetros
Highest Mexican population share by state
All USAlaskaAlabamaArkansasArizonaCaliforniaColoradoFloridaGeorgiaIowaIdahoIllinoisIndianaKansasKentuckyLouisianaMassachusettsMarylandMaineMichiganMinnesotaMissouriMississippiMontanaNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew MexicoNevadaNew YorkOhioOklahomaOregonPennsylvaniaSouth CarolinaSouth DakotaTennesseeTexasUtahVirginiaVermontWashingtonWisconsinWest VirginiaWyoming
RANKPLACESTATEPOPMEXICAN SHAREVS 2010
01Crawford County, IAIA16,23722.5%+6.5 pts
02Marshall County, IAIA39,89020.9%+7.0 pts
03Buena Vista County, IAIA20,44919.8%+2.7 pts
04Louisa County, IAIA10,41614.9%+1.4 pts
05Muscatine County, IAIA41,85314.3%+1.9 pts
06Woodbury County, IAIA106,64913.7%+3.3 pts
07Franklin County, IAIA9,86812.6%+3.8 pts
08Clarke County, IAIA9,57412.2%+6.5 pts
09Wright County, IAIA12,8019.7%+3.0 pts
10Tama County, IAIA16,7969.6%+4.4 pts
11Sioux County, IAIA36,7749.0%+2.3 pts
12Wapello County, IAIA35,2108.2%+2.4 pts
13Pottawattamie County, IAIA92,9966.6%+1.8 pts
14Emmet County, IAIA9,1076.6%+3.1 pts
15Polk County, IAIA516,5466.5%+0.8 pts
16Osceola County, IAIA5,9806.3%+2.3 pts
17Scott County, IAIA175,2596.2%+1.5 pts
18Hamilton County, IAIA14,9445.7%+2.2 pts
19Washington County, IAIA22,6675.4%+1.8 pts
20Allamakee County, IAIA14,2384.9%+2.4 pts
21Taylor County, IAIA5,8354.6%+0.6 pts
22Cerro Gordo County, IAIA42,3724.1%+1.2 pts
23Plymouth County, IAIA25,6974.1%+2.5 pts
24Webster County, IAIA36,8383.9%+1.0 pts
25Hancock County, IAIA10,5283.7%+0.6 pts
26Dallas County, IAIA118,4573.5%−0.3 pts
27Clay County, IAIA16,2023.5%+1.3 pts
28Winnebago County, IAIA10,2513.3%+2.0 pts
29Hardin County, IAIA16,4553.3%+0.9 pts
30Lee County, IAIA32,3063.3%+0.8 pts
31Sac County, IAIA9,5253.3%+1.8 pts
32Henry County, IAIA19,3493.2%+0.4 pts
33Black Hawk County, IAIA131,5323.2%+0.6 pts
34Humboldt County, IAIA9,4093.2%+0.9 pts
35O'Brien County, IAIA14,2203.1%+0.2 pts
36Johnson County, IAIA160,0443.1%+0.6 pts
37Montgomery County, IAIA10,0022.8%+0.3 pts
38Floyd County, IAIA14,9012.7%+1.4 pts
39Mills County, IAIA14,7932.7%+1.4 pts
40Worth County, IAIA7,3382.6%+1.0 pts
41Chickasaw County, IAIA11,6632.6%+1.1 pts
42Page County, IAIA14,8562.5%+0.2 pts
43Linn County, IAIA232,0282.5%+0.6 pts
44Iowa County, IAIA16,5042.5%+1.4 pts
45Story County, IAIA101,2912.5%+0.8 pts
46Ringgold County, IAIA4,6422.4%+1.8 pts
47Fremont County, IAIA6,5222.4%+0.3 pts
48Lyon County, IAIA12,3542.4%+1.1 pts
49Boone County, IAIA26,7992.4%+0.8 pts
50Union County, IAIA11,8292.4%+1.2 pts
51Ida County, IAIA6,7772.4%+1.3 pts
52Clinton County, IAIA46,0022.3%+0.3 pts
53Warren County, IAIA57,3312.3%+0.9 pts
54Shelby County, IAIA11,6892.2%+2.0 pts
55Decatur County, IAIA7,6552.1%0.0 pts
56Monona County, IAIA8,5392.0%+1.1 pts
57Cedar County, IAIA18,3592.0%+0.8 pts
58Jasper County, IAIA38,1532.0%+0.6 pts
59Keokuk County, IAIA9,7971.9%+1.2 pts
60Cass County, IAIA12,9601.9%+0.4 pts
61Palo Alto County, IAIA8,8991.8%+1.0 pts
62Pocahontas County, IAIA6,8191.8%+0.5 pts
63Fayette County, IAIA19,0471.8%+0.4 pts
64Mahaska County, IAIA21,8801.7%+0.5 pts
65Des Moines County, IAIA38,0771.7%−0.6 pts
66Clayton County, IAIA16,8451.7%+0.5 pts
67Greene County, IAIA8,6581.6%+0.5 pts
68Guthrie County, IAIA10,7821.6%+0.5 pts
69Jones County, IAIA21,2531.6%+1.2 pts
70Poweshiek County, IAIA18,3681.6%+0.4 pts
71Harrison County, IAIA14,6231.6%+1.1 pts
72Winneshiek County, IAIA19,7331.6%+0.4 pts
73Howard County, IAIA9,4151.6%+0.8 pts
74Madison County, IAIA17,2701.5%+0.7 pts
75Marion County, IAIA34,1921.5%+1.0 pts
76Calhoun County, IAIA9,5621.4%+0.9 pts
77Adair County, IAIA7,4031.4%+0.8 pts
78Dubuque County, IAIA99,3811.4%+0.1 pts
79Davis County, IAIA9,2301.4%+1.2 pts
80Dickinson County, IAIA18,0771.4%+0.7 pts
81Jefferson County, IAIA15,2911.4%−0.3 pts
82Kossuth County, IAIA14,3221.3%+0.5 pts
83Appanoose County, IAIA12,0771.3%+0.5 pts
84Monroe County, IAIA7,4061.2%+0.7 pts
85Buchanan County, IAIA20,8831.2%+0.5 pts
86Lucas County, IAIA8,8471.2%+0.4 pts
87Carroll County, IAIA20,3031.2%0.0 pts
88Adams County, IAIA3,6171.1%−0.8 pts
89Wayne County, IAIA6,7381.1%–
90Benton County, IAIA26,0041.1%+0.3 pts
91Jackson County, IAIA19,2881.1%+0.7 pts
92Butler County, IAIA14,0491.1%+0.4 pts
93Mitchell County, IAIA10,6501.1%+0.4 pts
94Van Buren County, IAIA7,1311.0%+0.6 pts
95Delaware County, IAIA17,6741.0%+0.7 pts
96Grundy County, IAIA12,3611.0%+0.5 pts
97Bremer County, IAIA25,2960.9%+0.4 pts
98Audubon County, IAIA5,5090.7%+0.1 pts
99Cherokee County, IAIA11,3690.7%−1.0 pts
SHOWING 1–99 OF 99

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