Hello how may I help you? what is the life expectancy of Denver, CO average The average life expectancy in Denver is 84 years. Really. How does that compare to other large cities? The life expectancy in New York, for instance, is 81 years. That is pretty good as well The average life expectancy is 68 years and 4 months for males. 72 years and 8 months for females. That seems a lot lower. Perhaps I should move to Denver That sounds good! Does Denver have a pretty good health system? Yes. Denver ranks 6th best in the country in terms of healthcare.