I live in chicagoland so its def a long list, but to shorten it I'll just say bands that come from my county, which narrows it down to two bands and a singer, that I know of, lol.
The death metal band Oceano(which I actually played a couple shows with cack in my metal days), most probly never heard of em tho.
The defunct band Five Pointe 0, Once again probly never heard of em but they broke up just on the cusp of being huge, I forgot why. They had a single on the original resident evil soundtrack and it had some good radio play as well then they just broke up, they're trying to come back as a band called Zillion now.
Lastly, Lionel Richie attended high school in my town, my grandma went to school with him actually, he was born in Tuskegee tho.
Now, a lil list of my fave chicagoland bands: Disturbed, Mudvayne, Chevelle, Smashing Pumpkins, and Alkaline Trio. (Oh, and fallout boy is from around here too but I dont like them so much)