Most public transit riders, Iowa counties

Iowa counties with the most workers commuting by public transportation, as of the 2024 American Community Survey. Ranked by number of commuters, not the transit share. This list covers the 99 counties in Iowa that qualify, ranked against each other statewide. The median across all 99 is 8. Biggest climber in the top 100 since 2020: Crawford County, IA, up 82 places to #11.