Largest Australian population, Ohio counties

Ohio counties ranked by the number of residents who are Australian ancestry, from the 2024 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 39 counties in Ohio that qualify, ranked against each other statewide. The median across all 39 is 30. Biggest climber in the top 100 since 2020: Montgomery County, OH, up 17 places to #5.