RANKING · 2020 CENSUS · 25 SHOWN OF 25

Highest Costa Rican population share, Wisconsin counties · 2020

Wisconsin counties ranked by the share of all residents who are Costa Rican origin (2023 American Community Survey). A concentration measure: Costa Rican residents as a percentage of total population. This list covers the 25 counties in Wisconsin that qualify, ranked against each other statewide.

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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

Highest Costa Rican population share by state

RANKPLACESTATEPOPCOSTA RICAN SHAREVS 2000

01Iowa County, WIWI23,9510.1%–

02Portage County, WIWI71,9430.1%–

03Dane County, WIWI590,3750.1%–

04Pierce County, WIWI43,5190.1%–

05Douglas County, WIWI43,9900.1%–

06Sauk County, WIWI66,6520.1%–

07Calumet County, WIWI53,9820.0%–

08Green Lake County, WIWI19,3050.0%–

09Ozaukee County, WIWI94,3460.0%–

10Outagamie County, WIWI195,8940.0%–

11Monroe County, WIWI46,5720.0%–

12Columbia County, WIWI58,1320.0%–

13Milwaukee County, WIWI924,2160.0%–

14Washington County, WIWI139,2380.0%–

15Kenosha County, WIWI168,4480.0%–

16Marathon County, WIWI139,4320.0%–

17Vilas County, WIWI23,7610.0%–

18Shawano County, WIWI41,5600.0%–

19Waupaca County, WIWI51,4610.0%–

20Trempealeau County, WIWI31,1710.0%–

21Fond du Lac County, WIWI104,6690.0%–

22La Crosse County, WIWI121,3390.0%–

23Winnebago County, WIWI174,2180.0%–

24Dodge County, WIWI89,0970.0%–

25Eau Claire County, WIWI109,0330.0%–

SHOWING 1–25 OF 25

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