Where are Marsh McLennan on Map
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| Title | Category | Description | Link | Address | Phone Number | Type |
|---|
The headquarters of Marsh & McLennan Companies, Inc. is located at 1166 Avenue of the Americas, New York, NY, United States, 10036.
It is centrally situated in Midtown Manhattan, with Bryant Park and Rockefeller Center being two of the closest major landmarks. The building also houses the New York office of one of Marsh & McLennan’s own operating companies, Mercer.
General information
| Traded as | NYSE: MMC |
| Industry: | Insurance brokers, Professional services |
| Founded: | 1905 in Chicago, Illinois, U.S. |
| Headquarters | 1166 Avenue of the Americas, New York City, New York, U.S. |
| ZIP Code | 10017 |
| Phone Number | +1 212-345-7171 |
| Number of employees | 90,000 (2024) |
| Website: | marshmclennan.com |
Marsh & McLennan Companies, Inc. is a global professional services firm that delivers advisory services and insurance solutions focused on risk, strategy, and people.
The company’s operations are divided into two main areas: Risk and Insurance Services, and Consulting. The Risk and Insurance Services segment specializes in various risk management services, including risk advice, risk transfer, and solutions for risk control and mitigation.
It also offers insurance and reinsurance broking, strategic advisory services, analytics, and insurance program management. This segment serves a diverse clientele, such as businesses, public organizations, insurance firms, associations, professional services organizations, and private individuals.
Meanwhile, the Consulting segment provides expert advice, solutions, and products related to health, wealth, and career management, in addition to offering specialized services in management, strategy, economics, and brand consulting.
Contact Information
For general inquiries, you can reach MMC at the phone number +1 (212) 345-5000.
For customer support, the dedicated line is +1 (800) 555-1212. If you need to address any complaints, you may call their complaint hotline at +1 (800) 555-1300.
Official Networking Platform
- LinkedIn: linkedin.com/company/marshmclennan/
- (formerly Twitter) X: x.com/marshmclennan
- YouTube: www.youtube.com/@MarshMcLennanChannel
FAQ’s
When did Marsh & McLennan Companies, Inc. stock first become publicly traded?
Marsh & McLennan Companies, Inc. first became publicly traded in 1962, marking its entry into the public financial markets.
What is Marsh & McLennan Companies, Inc.’s flagship product?
While MMC offers a broad range of services, its flagship product is arguably its comprehensive risk management solutions offered through Marsh.
Who founded Marsh & McLennan Companies, Inc.?
Marsh & McLennan Companies, Inc. was founded by Henry W. Marsh and Donald R. McLennan, who established the firm in 1905, laying the groundwork for its future growth and industry leadership.
External links
- Official website
- Business data for Marsh McLennan:
- Explore Jobs & Careers at Marsh McLennan careers.marshmclennan.com/global/en




















