Where are the headquarters of Marsh & McLennan Companies Inc. located?

The headquarters of Marsh & McLennan Companies Inc. is located in New York City, United States. As a global professional services firm, Marsh & McLennan Companies operates in more than 130 countries, with a significant presence in major cities worldwide. However, its main corporate office is situated in the iconic 1166 Avenue of the Americas building in Manhattan. This central location enables Marsh & McLennan to be at the heart of innovation, industry trends, and global business operations. With this strategic headquarters, the company facilitates seamless collaboration, attracts top talent, and ensures proximity to key clients, financial institutions, and partners.