This map shows the median age of residents living in each county in the continental United States. The median is the middle value in a list of numbers. This map illustrates data compiled by census for the year of 2016. Looking at the map, one can see areas with a large population of individuals with a median age between 46-62 in the northern parts of the Mid-West, North-West and throughout the state of Florida. The South-East and Mid-West have a large population of individuals with a median age between 34-45.