Denver Colorado Population 2024. Denver county, colorado's estimated 2024 population is 719,701 with a growth rate of 0.44% in the past year according to the most recent united states census data. Chart and table of population level and growth rate for the denver metro area from 1950 to 2024.

Ever wonder how many people live in denver, co and how fast that number changes? But places like windsor and castle rock, pictured here, are seeing strong growth.