Highest Romanian population share, South Dakota counties

South Dakota counties ranked by the share of all residents who are Romanian ancestry (2024 American Community Survey). A concentration measure: Romanian residents as a percentage of total population. This list covers the 15 counties in South Dakota that qualify, ranked against each other statewide. The median across all 15 is 0.1%. Biggest climber in the top 100 since 2020: Hughes County, SD, up 7 places to #3.