>>1614967The stats for the Mountain states is a little out of date. Mountain States have 24.55M ppl now. It's still the lowest populated region in the lower 48 with 855,767 sq miles (2,216,426 sq km), meaning 28.68 ppl/sq mi and is larger than Greenland, Alaska, or Scandinavia individually.
For a comparison with Scandinavia (excluding Greenland, while including all islands and Finland) has 534,162 sq miles (1,383,473 sq km) and has 27.003M ppl (excluding Greenland) resulting in 50.54 ppl/sq mi. Giving the Mountain states almost half the population density of Scandinavia. While Alaska reigns supreme with 1.26 ppl/sq mi and 663,268 sq mi (1,717,856 sq km) and less than 800k ppl.