Ranking of Montana Counties By Percentage of the Population that Identified as Non-Hispanic from Census 2020

According to the data from the United States 2020 decennial Census, in April 2020, among all of Montana counties, Liberty County had the highest percentange of a county's population who identified as Non-Hispanic (not hispanic or latino) (99.34%), followed by Carter County (99.22%), and Petroleum County (98.99%).

The chart below shows the top 10 counties, and the table below shows the ranking of all Montana counties based on the percentage of each county's population that identified as non-hispanic.

You can see similar ranking information for other states and also for the different racial groups and the different ethnicities in Montana.