Elmwood Park is a village in Cook County, Illinois, United States. The population was 24,521 at the 2020 census. The community has long maintained a large Italian-American population, with a more recent influx of Polish-American and Hispanic residents.

The Milwaukee District West Line (MD-W) is a Metra commuter rail line in Chicago, Illinois, and its western suburbs. Metra does not refer to any of its lines by a particular color, but the timetable accents for the Milwaukee District West line are dark "Arrow Yellow," honoring the Milwaukee Road's Arrow passenger train. Trains are dispatched from the Canadian Pacific Kansas City Railway's American headquarters in Minneapolis.