There is one radio station here in Boston however that is an exception, and it is a reminder of how FM radio used to be. It is WMBR 88.1 out of MIT and you can pick up a live feed here. I listen to the station hour after hour and have been turned on to some excellent music.
If you pick up the live feed, don't judge the station on what you hear at the current time. They are currently playing punk music but will start the "Bats in the Belfry" show at 6PM (which is a goth show that starts with ancient music and then plays two hours of goth rock.) Just about every type of music is heard here. Bluegrass, Celtic, Blues, Jazz, old style country, Cajun, Mexican, you name it, they play it at some point during the programming week.