RANKING · 2024 ACS · 20 SHOWN OF 20

Highest Chamorro population share, Iowa counties

Iowa counties ranked by the share of all residents who are Chamorro (2024 American Community Survey). A concentration measure: Chamorro residents as a percentage of total population. This list covers the 20 counties in Iowa that qualify, ranked against each other statewide. The median across all 20 is 0.0%. Biggest climber in the top 100 since 2020: Audubon County, IA, up 13 places to #1.

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RELATEDLargest Native Hawaiian population Highest Native Hawaiian population share Largest Samoan population Highest Samoan population share Largest Tongan population Highest Tongan population share

Highest Chamorro population share by state

RANKPLACESTATEPOPCHAMORRO SHAREVS 2020

01▲13Audubon County, IAIA5,5090.3%+0.2 pts

02Montgomery County, IAIA10,0020.2%–

03▲13Jasper County, IAIA38,1530.2%+0.2 pts

04▲4Dubuque County, IAIA99,3810.1%0.0 pts

05▼4Floyd County, IAIA14,9010.1%−0.6 pts

06Webster County, IAIA36,8380.1%–

07Bremer County, IAIA25,2960.1%–

08▼1Lyon County, IAIA12,3540.0%0.0 pts

09▲10Scott County, IAIA175,2590.0%0.0 pts

10Sac County, IAIA9,5250.0%–

11▲11Story County, IAIA101,2910.0%0.0 pts

12▲11Mahaska County, IAIA21,8800.0%0.0 pts

13▲11Polk County, IAIA516,5460.0%0.0 pts

14O'Brien County, IAIA14,2200.0%–

15▲5Decatur County, IAIA7,6550.0%0.0 pts

16▲1Warren County, IAIA57,3310.0%0.0 pts

17▲9Fayette County, IAIA19,0470.0%0.0 pts

18Benton County, IAIA26,0040.0%–

19▼1Johnson County, IAIA160,0440.0%0.0 pts

20▲7Des Moines County, IAIA38,0770.0%0.0 pts

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES