Locally Researched by: Maddy Simpson, St. Louis Business Journal Dec 03, 2021, 5:00am CST Revised: Jan 05, 2022, 3:27pm CST

To be considered for this List, companies must have a three-year sales history with an increase in each fiscal year over the last; revenue of more than $1 million in fiscal 2018; and be a locally-based, independent, privately held business, not a subsidiary, division or franchise.

Information on The List was supplied by individual companies and company representatives through questionnaires 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.

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