What does the current distribution of population by age in the US look like? I would bet that younger people tend to flock to the cities more, and as they age

What does the current distribution of population by age in the US look like? I would bet that younger people tend to flock to the cities more, and as they age they leave for the suburbs and the country. If that's the case, there may be demographic shifts which will combine with other factors to affect a prolonged shift away from the cities.