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100 North Main Street
O'Fallon, MO 63366
Phone: 636-379-5532
Email: econdev@ofallon.mo.us

©2018-2019 City of O'Fallon, Missouri
 

Largest Employers

T

he most populous city in St. Charles County, O’Fallon is also home to some of the area’s largest employers. Listed below are the 25 largest employers in O’Fallon, Missouri.

 Business NameProduct or ServiceEmployees
1Mastercard International Global technology headquarters4000
2CitiFinancial Services3000
3Fort Zumwalt School DistrictEducation2030
4True ManufacturingFreezers and Commercial Coolers ManufacturerN/A
5Schnucks MarketGrocery store485
6Progress West HospitalMedical services425
7Wal-Mart SupercenterDiscount retail department store370
8SAK ConstructionPipe rehabilitation and tunneling contractor365
9Delmar Gardens / Garden Villas of O'FallonSkilled nursing care and retirement community355
10MEMCSilicon wafer manufacturer350
11Allianz Global Corporate & SpecialtyCorporate and Specialty insurance company295
12SynergeticsSurgical instruments and supplies275
13Air Evac LifeteamCorporate headquarters for medical air transportation245
14Level 3 CommunicationsVoice, internet, and data networking solutions for business240
15McDonaldsFast food restaurant235
16WalgreensRetail drug store210
17Nortek Global HVACHeating and cooling components205
18Target Department store170
19Lowe's Home CenterHome improvement supplies and services160
20The Phoenix GroupPOS equipment technology150
21O'Fallon CastingNon-ferrous investment casting foundry145
22McKesson CorporationPharmaceutical wholesaler140
23Dierbergs Grocery store140
24Schneider ElectricComputer hardware and software130
25VSM AbrasivesSandpaper manufacturer100

Source: City of O’Fallon Economic Development Department

Manufacturing Firms

Manufacturing Firms

Manufacturing Firms

International Firms

International Firms

International Firms