Information on The List was supplied by Reonomy, city of St. Louis records, St. Louis county records, St. Charles county records, and the listed companies, and could not be independently verified by the St. Louis Business Journal. Local is defined as St. Louis, St. Charles, Lincoln, Warren, Franklin, Washington and Jefferson counties and the city of St. Louis in Missouri; and St. Clair, Madison, Jersey, Clinton, Calhoun, Macoupin, Bond and Monroe counties in Illinois.