Montana 2020 Census Population Density By County Map

The population density of Montana from the 2020 Census was 7.45 people per square mile, based on data from the US Census Bureau.

Yellowstone County had the highest population density (62.55 people per square mile), followed by Silver Bow County (48.93 people per square mile), and then Gallatin County (45.66 people per square mile). On the other hand, the 3 counties with the lowest population density were: Garfield County (0.25 people per square mile), Petroleum County (0.3 people per square mile), and Carter County (0.42 people per square mile).

You can also see this information for other states and also for the US by state.

Hover over or click on the counties to see the population density for each county. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.