Highest Dutch population share, US counties · 2010
US counties ranked by the share of all residents who are Dutch ancestry (2023 American Community Survey). A concentration measure: Dutch residents as a percentage of total population. Sioux County, Iowa leads at 51.4%. 3,106 counties qualify in total. Iowa carries 7 of the top 25 entries.
UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES
Frequently asked
Which county has the highest dutch share?
Sioux County, Iowa ranks #1 with 51.4% (2010 American Community Survey).
What are the top 5 counties by dutch share?
Sioux County, Iowa, Douglas County, South Dakota, Ottawa County, Michigan, Lyon County, Iowa, Marion County, Iowa.
How many counties are in this ranking?
3,106 counties qualify after filtering for population minimums and data availability. The ranking covers 2010 ACS 5-year data.
How is dutch share measured?
Share of all residents who are Dutch ancestry (Ancestry, ACS detailed tables). Source: US Census Bureau, American Community Survey 5-year estimates (2010).