New US Census numbers show the Ann Arbor area continuing to grow.
Here's some info from Eric Guthrie, Michigan's State Demographer:
The Ann Arbor Metropolitan Area recorded the state’s largest percent population increase from 2015 to 2016 at just over one percent.
The state’s second smallest metro area, the Bay City MSA, had the state’s largest single-year, percent decrease with a 0.8 percent reduction in population.
The state’s fourth and eighth largest metro areas, the Flint and Saginaw MSAs, registered similar percent population losses between 2010 and 2016, at 3.9 and 3.8 percent decreases, respectively.