U.S. state profile · MT
Montana: area, population and density
Montana has 145,550 sq mi of land and a 2025 population estimate of 1,144,694; calculated population density is 3 people/km².
Sources: U.S. Census Bureau Gazetteer Files · 2026 · U.S. Census Bureau Population Estimates Program · 2025.
Montana ranks 4th of 51 by land area, 43rd by population and 49th by calculated population density among the U.S. states and DC. Density uses the displayed population divided by land area converted to square kilometres.
- Land area
- 145,550 sq miU.S. Census Bureau Gazetteer Files · 2026
- Population
- 1,144,694U.S. Census Bureau Population Estimates Program · 2025
- Calculated density
- 3 people/km²Population ÷ land area in km²
Reading the figures
Montana in the U.S. comparison set
Montana has 145,550 sq mi of land area and a population estimate of 1,144,694 for 2025. In the 51-place state and DC set, it is 4th by land area, 43rd by population, and 49th by calculated density.
Density is not a separately reported value here. It is calculated from the population and land area above, converted to square kilometres, so the result can be compared with supported country figures.
U.S. boundary outline: Census TIGER/Line 2025. The drawing is fitted to this profile panel; use a comparison page for a shared-area scale.