The New York City Department of City Planning has a very cool “metro region explorer” online that allows you to explore population, housing, and employment trends in the tri-state NYC Metropolitan Region. Start here and then click on “Learn More” to cycle through the slides and data.

One interesting takeaway is that population growth continues to centralize in the region’s core. Since 2010, 60% of the region’s population growth has taken place in the five boroughs of New York City, and in particular it has occurred in neighborhoods with strong rail transit.

There has also been a slowing in terms of the number of residents leaving New York City. Historically, people moved to the city in their 20′s and left in their 30′s. That trend is slowing.

I suspect this has to do with a combination of factors, including the shift toward a city-centered knowledge economy; the desire for walkability and urban amenities; the phenomenon of people getting married later in life (if at all); and so on.

The people who do leave the city are also more likely to leave for other parts of the U.S. than other parts of the region. This has led to a decline in the number of prime age (25-54 years old) workers in the suburbs.

Check out the Metro Region Explorer, here. There’s a lot of good stuff in there.