Companies in Missouri
1.5M companies registered in Missouri, sourced from official business registers and enriched with industry, size, location and contact data. Below: the largest companies by reported revenue, and how the Missouri business base breaks down by industry and headcount.
Part of the United States company directory.
Rankings
Largest companies in Missouri
By reported (actual) revenue, updated September 2026. Public-sector entities are excluded.
| # | Company | Industry | City | Revenue (USD) | Employees |
|---|---|---|---|---|---|
| 1 | Centene Corporation | Non-life insurance | Saint Louis | $194.8B | 61,100 |
| 2 | Bunge Global Markets, LLC | Wholesale of grain, unmanufactured tobacco, seeds and animal feeds | Chesterfield | $67.2B | 188 |
| 3 | Ascension Health Alliance | Non-life insurance | Saint Louis | $28.6B | 7,440 |
| 4 | Reinsurance Group of America, Incorporated | Life insurance | Chesterfield | $23.7B | 4,300 |
| 5 | Emerson Electric Co. | Manufacture of other taps and valves | Saint Louis | $18B | 71,000 |
| 6 | Jones Financial Companies, L.L.L.P. | Security and commodity contracts brokerage | Des Peres | $17.9B | 55,000 |
| 7 | O'Reilly Automotive, Inc. | Retail trade of motor vehicle parts and accessories | Springfield | $17.8B | 92,923 |
| 8 | Graybar Electric Company, Inc. | Wholesale of electronic and telecommunications equipment and parts | Saint Louis | $12.9B | 10,146 |
| 9 | Bjc Health System | Hospital activities | Saint Louis | $12.1B | 27,000 |
| 10 | Mercy Health | Hospital activities | Chesterfield | $9.3B | 8,800 |
| 11 | Ameren Corporation | Electric power generation, transmission and distribution | Saint Louis | $8.8B | 8,913 |
| 12 | Post Holdings, Inc. | Other processing and preserving of fruit and vegetables | Saint Louis | $8.2B | 43,130 |
| 13 | Core & Main, Inc. | Non-specialised wholesale trade | Saint Louis | $7.6B | 5,600 |
| 14 | McCarthy Holdings, Inc. | Construction of residential and non-residential buildings | Saint Louis | $7.1B | 7,470 |
| 15 | McCarthy Building Companies, Inc. | Construction of residential and non-residential buildings | Saint Louis | $7.1B | 6,684 |
| 16 | Olin Corporation | Manufacture of other inorganic basic chemicals | Saint Louis | $6.8B | 7,849 |
| 17 | Evergy, Inc. | Steam and air conditioning supply | Kansas City | $6B | 4,691 |
| 18 | Cerner Corporation | Computer consultancy activities | Kansas City | $5.8B | 25,150 |
| 19 | The Washington University | Tertiary education | Saint Louis | $5.2B | 9,600 |
| 20 | Union Electric Company | Electric power generation, transmission and distribution | Saint Louis | $4.8B | 3,767 |
| 21 | Panera Brands, Inc. | Retail sale of bread, cakes, flour confectionery and sugar confectionery in specialised stores | Saint Louis | $4.7B | 25,197 |
| 22 | Equipmentshare.com Inc | Rental and leasing of construction and civil engineering machinery and equipment | Columbia | $4.4B | 8,206 |
| 23 | Umb Financial Corporation | Other monetary intermediation | Kansas City | $4.1B | 5,222 |
| 24 | Leggett & Platt, Incorporated | Manufacture of mattresses | Carthage | $4.1B | 15,900 |
| 25 | University of Missouri System | Tertiary education | Columbia | $4B | 30,282 |
Top 25 by revenue reported to the register. Companies filing no revenue figure are not ranked, whatever their size.
Centene Corporation leads Missouri at $194.8B in reported revenue, from Saint Louis.
Coverage
Companies by industry in Missouri
The industries holding the most companies, by NACE activity code.
Ranked by number of companies. Each record carries its NACE code alongside SIC and NAICS, so the same segment can be pulled in any of the three schemes.
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Other business support service activities n.e.c. is the largest activity in Missouri, with 77,429 companies.
Distribution
Company size
By number of employees.
20,062 companies have no disclosed headcount (excluded from the chart).
91% of Missouri companies with a disclosed headcount fall in the 1-4 employee band.
Data coverage
What a Missouri record carries
Share of the state's companies holding each contact field.
19%
with a website
36%
with a phone number
13%
with an email address
Counted against the 1.5M companies in Missouri. Firmographics — industry, size, address, status — are present on every record.
FAQ
Companies in Missouri — frequently asked questions
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