RANKING · 2024 ACS · 55 SHOWN OF 55

Highest Spaniard population share, Iowa counties

Iowa counties ranked by the share of all residents who are Spaniard origin (2024 American Community Survey). A concentration measure: Spaniard residents as a percentage of total population. This list covers the 55 counties in Iowa that qualify, ranked against each other statewide. The median across all 55 is 0.1%. Biggest climber in the top 100 since 2020: Madison County, IA, up 35 places to #14.

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RELATEDLargest Mexican population Highest Mexican population share Largest Puerto Rican population Highest Puerto Rican population share Largest Cuban population Highest Cuban population share

YEAR2010 2020 2024

RANKPLACESTATEPOPSPANIARD SHAREVS 2010

01▲5Mills County, IAIA14,7931.7%–

02▲13Emmet County, IAIA9,1070.8%–

03▲11Worth County, IAIA7,3380.4%–

04Palo Alto County, IAIA8,8990.4%+0.2 pts

05Howard County, IAIA9,4150.3%–

06▲6Harrison County, IAIA14,6230.2%+0.2 pts

07▼3Lucas County, IAIA8,8470.2%–

08▲17Decatur County, IAIA7,6550.2%–

09▲32Clinton County, IAIA46,0020.2%–

10▲14Polk County, IAIA516,5460.2%+0.2 pts

11Floyd County, IAIA14,9010.2%–

12▲4Sioux County, IAIA36,7740.2%–

13▲14Woodbury County, IAIA106,6490.2%+0.1 pts

14▲35Madison County, IAIA17,2700.1%−0.1 pts

15▲13Story County, IAIA101,2910.1%0.0 pts

16▲2Marion County, IAIA34,1920.1%+0.1 pts

17▲3Johnson County, IAIA160,0440.1%+0.1 pts

18▲25Dallas County, IAIA118,4570.1%–

19Shelby County, IAIA11,6890.1%–

20▲9Pottawattamie County, IAIA92,9960.1%+0.1 pts

21▲15Plymouth County, IAIA25,6970.1%+0.1 pts

22▼3Cerro Gordo County, IAIA42,3720.1%–

23Sac County, IAIA9,5250.1%–

24Monona County, IAIA8,5390.1%–

25Calhoun County, IAIA9,5620.1%–

26▲14Webster County, IAIA36,8380.1%–

27▲24Des Moines County, IAIA38,0770.1%–

28Union County, IAIA11,8290.1%–

29Dickinson County, IAIA18,0770.1%–

30Ringgold County, IAIA4,6420.1%−0.4 pts

31▼1Dubuque County, IAIA99,3810.1%0.0 pts

32Chickasaw County, IAIA11,6630.1%–

33Montgomery County, IAIA10,0020.1%0.0 pts

34▼12Linn County, IAIA232,0280.1%0.0 pts

35▲17Cedar County, IAIA18,3590.1%0.0 pts

36▼28Poweshiek County, IAIA18,3680.1%–

37▼26Wapello County, IAIA35,2100.0%–

38Jackson County, IAIA19,2880.0%0.0 pts

39▼26Washington County, IAIA22,6670.0%−0.1 pts

40Keokuk County, IAIA9,7970.0%–

41▲7Scott County, IAIA175,2590.0%0.0 pts

42Muscatine County, IAIA41,8530.0%–

43▼11Black Hawk County, IAIA131,5320.0%0.0 pts

44▼39Guthrie County, IAIA10,7820.0%0.0 pts

45Buchanan County, IAIA20,8830.0%–

46Louisa County, IAIA10,4160.0%0.0 pts

47▼10Kossuth County, IAIA14,3220.0%–

48Henry County, IAIA19,3490.0%–

49▼4Warren County, IAIA57,3310.0%0.0 pts

50▼17Page County, IAIA14,8560.0%–

51▼9Buena Vista County, IAIA20,4490.0%–

52▼18Fayette County, IAIA19,0470.0%0.0 pts

53▼27O'Brien County, IAIA14,2200.0%–

54Franklin County, IAIA9,8680.0%–

55Tama County, IAIA16,7960.0%–

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES