Highest Dutch population share, US counties · 2020
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 45.0%. 3,089 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 45.0% (2020 American Community Survey).
What are the top 5 counties by dutch share?
Sioux County, Iowa, Lyon County, Iowa, Ottawa County, Michigan, O'Brien County, Iowa, Douglas County, South Dakota.
How many counties are in this ranking?
3,089 counties qualify after filtering for population minimums and data availability. The ranking covers 2020 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 (2020).