Highest Iranian population share, Montana counties

Montana counties ranked by the share of all residents who are Iranian ancestry (2024 American Community Survey). A concentration measure: Iranian residents as a percentage of total population. This list covers the 13 counties in Montana that qualify, ranked against each other statewide. The median across all 13 is 0.0%. Biggest climber in the top 100 since 2020: Cascade County, MT, up 6 places to #3.