Highest Dutch population share, US counties · 2010
US counties ranked by the share of all residents who are Dutch ancestry (2010 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.
Dutch Americans: full group profile →UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS
Frequently asked
Which county has the highest dutch share?
Sioux County, Iowa ranks #1 with 51.4% (2010 Decennial Census).
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 Decennial Census data.
How is dutch share measured?
Share of all residents who are Dutch ancestry (Ancestry, ACS detailed tables). Source: US Census Bureau, 2010 Decennial Census.