RANKING · 2024 ACS · 16 SHOWN OF 16

Largest Costa Rican population, Iowa counties

Iowa counties ranked by the number of residents who are Costa Rican origin, from the 2024 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 16 counties in Iowa that qualify, ranked against each other statewide.

Costa Rican Americans: full group profile →

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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

Largest Costa Rican population by state

RANKPLACESTATEPOPCOSTA RICAN POPULATIONVS 2010

01Dallas County, IAIA118,457164–

02Black Hawk County, IAIA131,532154+285%

03Polk County, IAIA516,54635+169%

04Buena Vista County, IAIA20,44931–

05Story County, IAIA101,29125–

06Wright County, IAIA12,80123–

07Allamakee County, IAIA14,23819–

08Iowa County, IAIA16,50419+375%

09Linn County, IAIA232,02815–

10Marshall County, IAIA39,89015–

11Scott County, IAIA175,25914−42%

12Clinton County, IAIA46,00213–

13Madison County, IAIA17,2709–

14Monona County, IAIA8,5399+50%

15Mitchell County, IAIA10,6508+300%

16Tama County, IAIA16,7962–

SHOWING 1–16 OF 16

Download CSV (full list, 16 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES