Also predating much of the growth in the Rocky Mountains. The population of Idaho in the 1950 census was 589K, compared to 1.96M today. Idaho is still a very lo

Also predating much of the growth in the Rocky Mountains. The population of Idaho in the 1950 census was 589K, compared to 1.96M today. Idaho is still a very low density state, but at the time there were an average of 2.7 people/km^2, just over 1% of modern Germany's 233/km^2.