In 2018 there were 754,000 residents aged 65 and older in Colorado, who comprised 13.4% of the total population. This is below the national average of 15.3%. The baby boomer generation includes all people born between 1946 and 1964. Boomers are now between 55 and 73 years of age. A decade from now, when all the boomers will be 65 and older, they will comprise over 18% of the total population.