RANKING · 2020 CENSUS · 41 SHOWN OF 41

Highest Romanian population share, Iowa counties · 2020

Iowa counties ranked by the share of all residents who are Romanian ancestry (2020 American Community Survey). A concentration measure: Romanian residents as a percentage of total population. This list covers the 41 counties in Iowa that qualify, ranked against each other statewide. The median across all 41 is 0.0%.

Romanian Americans: full group profile →

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SAME RANKING BYCities States Metros

RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

RANKPLACESTATEPOPROMANIAN SHAREVS 2010

01Mitchell County, IAIA10,6500.8%–

02Floyd County, IAIA14,9010.7%–

03Harrison County, IAIA14,6230.3%+0.3 pts

04Warren County, IAIA57,3310.2%+0.2 pts

05Jefferson County, IAIA15,2910.2%0.0 pts

06Dallas County, IAIA118,4570.1%+0.1 pts

07Clinton County, IAIA46,0020.1%0.0 pts

08Poweshiek County, IAIA18,3680.1%0.0 pts

09Muscatine County, IAIA41,8530.1%+0.1 pts

10Decatur County, IAIA7,6550.1%–

11Montgomery County, IAIA10,0020.1%–

12Bremer County, IAIA25,2960.1%+0.1 pts

13Des Moines County, IAIA38,0770.1%–

14Jackson County, IAIA19,2880.1%0.0 pts

15Tama County, IAIA16,7960.1%–

16Emmet County, IAIA9,1070.1%–

17Henry County, IAIA19,3490.1%–

18Black Hawk County, IAIA131,5320.0%0.0 pts

19Pottawattamie County, IAIA92,9960.0%0.0 pts

20Worth County, IAIA7,3380.0%−0.1 pts

21Polk County, IAIA516,5460.0%0.0 pts

22Madison County, IAIA17,2700.0%–

23Dubuque County, IAIA99,3810.0%−0.1 pts

24Van Buren County, IAIA7,1310.0%0.0 pts

25Scott County, IAIA175,2590.0%0.0 pts

26Mahaska County, IAIA21,8800.0%–

27Plymouth County, IAIA25,6970.0%–

28Woodbury County, IAIA106,6490.0%0.0 pts

29Story County, IAIA101,2910.0%0.0 pts

30Winnebago County, IAIA10,2510.0%–

31Lee County, IAIA32,3060.0%0.0 pts

32Jasper County, IAIA38,1530.0%0.0 pts

33Johnson County, IAIA160,0440.0%−0.2 pts

34Allamakee County, IAIA14,2380.0%–

35Sioux County, IAIA36,7740.0%–

36Hamilton County, IAIA14,9440.0%–

37Mills County, IAIA14,7930.0%–

38Linn County, IAIA232,0280.0%0.0 pts

39Benton County, IAIA26,0040.0%–

40Boone County, IAIA26,7990.0%–

41Kossuth County, IAIA14,3220.0%0.0 pts

SHOWING 1–41 OF 41

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