Highest Mongolian population share, Illinois counties

Illinois counties ranked by the share of all residents who are Mongolian (2024 American Community Survey). A concentration measure: Mongolian residents as a percentage of total population. This list covers the 13 counties in Illinois that qualify, ranked against each other statewide. The median across all 13 is 0.0%. Biggest climber in the top 100 since 2020: Lake County, IL, up 10 places to #3.