This intriguing map shows the median age in the United States' 366* metro areas. Most metro areas have a median age somewhere in the 30s. Eighteen metro areas, however, have populations whose median ages are under 30. These include college towns like Ithaca (NY) and Athens (GA) as well as areas with large military bases such as Jacksonville (NC). On the other end of the spectrum is the Punta Gorda metro area, a Florida retirement mecca where the median age is 55.8 years. Another 71 metros -largely a mix of retirement/tourist areas and aging industrial towns- have median ages between 40-50 years.
*Some earlier maps show 366 metros but report there are only 365. I miscounted. There are 366.