Fort Collins Colorado Population 2024 By Age. The population of fort collins is 166,069, with a population density of 2,902 people per square mile, diverging from the national average of 91. Chart and table of population level and growth rate for the fort collins metro area from 1950 to 2024.
Chart and table of population level and growth rate for the fort collins metro area from 1950 to 2024. The current population of fort collins, colorado is 170,507 based on our projections of the latest us census estimates (released may 2024).