The 19th district includes all, or parts, of the communities of Arbury Hills, Country Club Hills, Frankfort, Frankfort Square, Hazel Crest, Homer Glen, Homewood, Joliet, Lockport, Matteson, Mokena, New Lenox, Oak Forest, Olympia Fields, Orland Hills, Orland Park, Richton Park, Tinley Park and University Park.