Bostonian.

It means people living in Boston, MA(Massachusetts).
I really like Boston because it is kind of the education city of the world.
There are well-known universities such as Harvard, Tuft, Boston, MIT etc.
Because of that reason, the average age of city is youngest in the U.S.A

If you have a chance to go to Boston, Boston library where you should go is the oldest through America, and I really suggest drinking ‘Samuel Adams’.

Enjoy it.