Highest Dutch population share, US counties
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 40.8%. 3,054 counties qualify in total. Iowa carries 8 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 40.8% (2024 American Community Survey).
What are the top 5 counties by dutch share?
Sioux County, Iowa, Lyon County, Iowa, Douglas County, South Dakota, Ottawa County, Michigan, Allegan County, Michigan.
How many counties are in this ranking?
3,054 counties qualify after filtering for population minimums and data availability. The ranking covers 2024 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 (2024).