It’s interesting to map the median age of New Yorkers by Census Blocks. While certain census blocks show a median age that is noticeably younger then some, e.g. juvenile institutions and colleges, a broader trend can be seen in Catskill and Adirondack Parks — residents there tend to be older.

Looking at this map, one can conclude residents of the Southern Tier, Tug Hill Regions, and North Country tend to be younger compared other portions of state, while in surburban areas people tend to be somewhat younger. Cities tend to have youngest populations, especially in neighborhoods touched by poverty and blight.

Despite what you might think, residents of Mohawk Valley are not particularly older then the rest of state. If anything, they are slightly younger. The idea that all of the young people are moving away from the Mohawk Valley isn’t supported by data, or at least new young people are coming back to replace the lost people.