I'm from Minnesota, about 45 minutes north of the Twin Cities (Mpls/StPaul) and in my town it's mostly houses. But most people that live in either downtown, live in apartments or condos. Once you get out of the city and into the suburbs, then you get houses. Still a lot of apartments and condos, though. They range from places that would accept HUD to super luxury.
I thought it was kind of cool that they used St.Paul for Bobby's background story since Peter Krause is from Roseville, which is an inner ring suburb very close to St.Paul.
That being said, his back story is ridiculous. The cheif is responsible for a fire that not only killed his family but an additional 150+? Good grief. I'm used to overkill when it comes to Ryan Murphy shows, but c'mon...?