RANKING · 2010 CENSUS · 37 SHOWN OF 37

Largest Romanian population, Iowa counties · 2010

Iowa counties ranked by the number of residents who are Romanian ancestry, from the 2023 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 37 counties in Iowa that qualify, ranked against each other statewide.

IowaAll states All rankings

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 POPULATIONVS 2000

01Johnson County, IAIA160,044224–

02Polk County, IAIA516,546201–

03Dubuque County, IAIA99,381149–

04Linn County, IAIA232,028110–

05Cerro Gordo County, IAIA42,37295–

06Scott County, IAIA175,25979–

07Woodbury County, IAIA106,64963–

08Clinton County, IAIA46,00262–

09Black Hawk County, IAIA131,53247–

10Story County, IAIA101,29139–

11Jefferson County, IAIA15,29133–

12Poweshiek County, IAIA18,36832–

13Dallas County, IAIA118,45723–

14Jasper County, IAIA38,15323–

15Lee County, IAIA32,30619–

16Buchanan County, IAIA20,88318–

17Butler County, IAIA14,04917–

18Muscatine County, IAIA41,85317–

19Jackson County, IAIA19,28816–

20Pottawattamie County, IAIA92,99616–

21O'Brien County, IAIA14,22015–

22Monona County, IAIA8,53912–

23Bremer County, IAIA25,29610–

24Marion County, IAIA34,19210–

25Humboldt County, IAIA9,4099–

26Worth County, IAIA7,3388–

27Appanoose County, IAIA12,0776–

28Marshall County, IAIA39,8906–

29Lucas County, IAIA8,8475–

30Pocahontas County, IAIA6,8195–

31Warren County, IAIA57,3315–

32Guthrie County, IAIA10,7824–

33Harrison County, IAIA14,6234–

34Clayton County, IAIA16,8453–

35Kossuth County, IAIA14,3223–

36Van Buren County, IAIA7,1313–

37Wayne County, IAIA6,7383–

SHOWING 1–37 OF 37

Download CSV (full list, 37 rows)

UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES