Hello how may I help you? help me look up facts in Denver What kind of facts would you like to know about Denver? what is the average life expectancy in Denver? The life expectancy as an overall average in Denver, Colorado is 80 years of age. how long do people live in the city? 80 years of age. i mean before they move somewhere else That depends on when and where, as well as many other differing factors that will take up time to research,. do they live there their whole life? It depends on the individual and other factors involved with their lifestyles, choices, and other situations.