Oh yay, this sounds fun! Can I submit Missouri? I don't know if I did it right, but here goes!
MO-01: St. Louis City - University City, Maryland Heights, Florissant
MO-02: St. Louis Suburbs - St. Charles, St. Peters, Chesterfield, Kirkwood
MO-03: Southern St. Louis & Suburbs - Webster Groves, Oakville, Mehlville, Arnold, Festus, Ste. Genevieve
MO-04: West Central - Jefferson City, Sedalia, Warrensburg, Marshall, Lebanon
MO-05: Kansas City - Independence, Raytown, Lees Summit
MO-06: Northwest - St. Joseph, Blue Springs, Liberty, Maryville, Excelsior Springs
MO-07: Southwest - Springfield, Joplin, Neosho, Carthage, Branson
MO-08: Southeast - Cape Girardeau, Rolla, Sikeston, Poplar Bluff, Farmington, Jackson, West Plains, Kennett
MO-09: Northeast - Columbia, Moberly, Hannibal, Kirksville