MRNHS wrote:stlokc wrote: ↑Dec 10, 2025
I don't really understand AI and I crack jokes about how little I understand it, but using AI or some other means, I wonder if there is a way to create a list of every business in St. Louis County that is owned by somebody who lives in St. Louis City.
Or another query could be a list of companies in the county that were either founded or at one point headquartered downtown (or even just the city itself). Monsanto (Bayer), Edward Jones, Armstrong Teasdale, Energizer, Edgewell Personal Care, RGA, and (recently) Peabody Energy are all firms that at one point called downtown home - though some were many many years ago. I'd imagine there are many more.
Here is ChatGPTs partial list of St. Louis County companies.
Alphabetical, with HQ municipality in parentheses)
• Alberici Corp. – construction & engineering (Overland) 
• Amdocs – telecom/IT software & services (Chesterfield) 
• Arch Resources / Core Natural Resources – coal / natural resources (Creve Coeur) 
• Ascension Health – Catholic health system (Edmundson) 
• Bayer CropScience (formerly Monsanto) – ag biotech & seeds (Creve Coeur) 
• Belden – industrial networking & cable (Clayton) 
• Boeing Defense, Space & Security – defense & aerospace (Berkeley) 
• Bunge (Global operations HQ / Bunge North America) – agribusiness & food (Chesterfield) 
• Caleres – footwear (Clayton) 
• Cass Information Systems – payment & info services (St. Louis County) 
• Centene Corporation – health insurance (Clayton) 
• Clayco, Inc. – design-build / construction (Overland) 
• Core & Main – water & wastewater infrastructure distribution (unincorporated St. Louis County) 
• Daugherty Systems – IT consulting (Creve Coeur) 
• Dierbergs Markets – grocery chain (Chesterfield) 
• Doe Run Company – mining & metals (Maryland Heights) 
• Drury Hotels – hotel company (Creve Coeur) 
• Edgewell Personal Care – consumer products (Chesterfield) 
• Edward Jones – financial services / brokerage (Des Peres) 
• Emerson Electric Co. – industrial technology & automation (Ferguson) 
• Energizer Holdings – batteries & household products (Town and Country) 
• Enterprise Holdings (Enterprise / National / Alamo) – car rental & mobility (Clayton) 
• Equifax Workforce Solutions – HR / payroll data services (Maryland Heights) 
• Express Scripts – pharmacy benefit management (unincorporated North St. Louis County, near UMSL) 
• Graybar Electric Company – electrical & data networking distribution (Clayton) 
• Hussmann Corp. – refrigeration equipment (Bridgeton) 
• Mallinckrodt Pharmaceuticals – specialty pharmaceuticals (Hazelwood) 
• Maritz – sales & marketing services, incentives (Fenton) 
• McCarthy Building Companies – large construction contractor (Ladue) 
• Mercy Health – health system (Chesterfield) 
• MiTek – building products & software (Chesterfield) 
• Nidec Motor Corporation – electric motors (Ferguson) 
• Olin Corporation – chemicals & Winchester ammunition (Clayton) 
• Panera Bread (St. Louis Bread Co.) – bakery-café chain, now headquartered in Fenton after moving from Sunset Hills 
• Post Holdings – packaged foods (Brentwood) 
• Rabo AgriFinance – ag finance (Chesterfield) 
• Rawlings Sporting Goods – sports equipment (Town and Country) 
• Reinsurance Group of America (RGA) – life & health reinsurance (Chesterfield) 
• Save-A-Lot – discount grocery chain (St. Ann) 
• Schnuck Markets – regional supermarket chain (Maryland Heights) 
• Soft Surroundings – apparel & home goods retail (Creve Coeur) 
• SSM Health – health system (Creve Coeur) 
• Suddenlink Communications – telecom (Town and Country) 
• Tacony Corporation – sewing & floor-care products (Fenton) 
• TDK Technologies – IT consulting (Chesterfield) 
• Vi-Jon Laboratories – personal care manufacturing (Overland) 
• World Wide Technology – IT services & integration (Maryland Heights) 
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