RANKING · 2024 ACS · 16 SHOWN OF 16

Highest Costa Rican population share, Iowa counties

Iowa 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 16 counties in Iowa 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

01Wright County, IAIA12,8010.2%–

02Dallas County, IAIA118,4570.2%–

03Buena Vista County, IAIA20,4490.1%–

04Allamakee County, IAIA14,2380.1%–

05Black Hawk County, IAIA131,5320.1%–

06Iowa County, IAIA16,5040.1%–

07Monona County, IAIA8,5390.1%–

08Mitchell County, IAIA10,6500.1%–

09Madison County, IAIA17,2700.1%–

10Marshall County, IAIA39,8900.0%–

11Clinton County, IAIA46,0020.0%–

12Story County, IAIA101,2910.0%–

13Tama County, IAIA16,7960.0%–

14Scott County, IAIA175,2590.0%–

15Polk County, IAIA516,5460.0%–

16Linn County, IAIA232,0280.0%–

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