History: United States Of America, 1900-1930

3 - Chicago, Illinois - 2,853,114 - 3 - Chicago-Naperville-Joliet, IL-IN-WI MSA - 9,569,624 - Midwest
4 - Houston, Texas - 2,242,193 - 6 - Houston-Sugar Land-Baytown, TX MSA - 5,728,143 - South
5 - Phoenix, Arizona - 1,567,924 - 12 - Phoenix-Mesa-Glendale, AZ MSA - 4,281,899 - West
6 - Philadelphia, Pennsylvania - 1,447,395 - 5 - Philadelphia-Camden-Wilmington, PA-NJ-DE-MD MSA - 5,838,471 - Northeast