Colorado Population 2024 Statistics Usa. Some estimates have placed the 2040 population as high as 7.8 million. Colorado has a land area of 103,610.1 square miles and a water area of 457.3 square miles.

With a population that exceeds 5.6 million spread among its many cities. The state recorded its highest growth in 1972 (4.39%) and posted its lowest growth in 1988.