Insights

Growing Regional Presence Marsh McLennan Agency - St. Louis is actively expanding its footprint through acquisitions and office expansion in the United States, especially in the Northeast and maritime sectors, indicating a strategic focus on growth opportunities in niche markets.

Award-Winning Expertise The company’s recent recognition as Best High Net Worth Insurance Broker at the PAM Awards highlights its strong reputation and specialization in high-net-worth client segments, presenting opportunities to cross-sell premium insurance solutions.

Leadership & Innovation The appointment of a Chief Information and Digital Officer and the launch of networks like Network Navigator show an investment in digital transformation and technology-driven services, ideal for engaging clients seeking innovative risk management and healthcare decision tools.

Industry Focus Specializing in maritime and niche insurance markets through recent acquisitions suggests potential for tailored insurance offerings, especially when targeting clients in specialized industries such as shipping, maritime, and high-net-worth individuals.

Financial Capacity With revenues between $250M and $500M and a sizable employee base, the company demonstrates substantial financial health and operational scale, enabling it to support large accounts and expand service offerings through strategic partnerships and targeted outreach.

Marsh McLennan Agency - St. Louis Tech Stack

Marsh McLennan Agency - St. Louis uses 8 technology products and services including Demandbase, QlikView, Adobe After Effects, and more. Explore Marsh McLennan Agency - St. Louis's tech stack below.

  • Demandbase
    Analytics
  • QlikView
    Business Intelligence
  • Adobe After Effects
    Cad & Graphics
  • PHP
    Programming Languages
  • Khoros
    Social Media Analytics And Monitoring
  • Microsoft ASP.NET
    Web Frameworks
  • AddThis
    Widgets
  • Twitter
    Widgets

Media & News

Marsh McLennan Agency - St. Louis's Email Address Formats

Marsh McLennan Agency - St. Louis uses at least 2 format(s):
Marsh McLennan Agency - St. Louis Email FormatsExamplePercentage
FLast@jwterrill.comJDoe@jwterrill.com
82%
First.Last@jwterrill.comJohn.Doe@jwterrill.com
16%
F.Last@jwterrill.comJ.Doe@jwterrill.com
1%
Last@jwterrill.comDoe@jwterrill.com
1%
First.Last@marshmma.comJohn.Doe@marshmma.com
97%
FirstL@marshmma.comJohnD@marshmma.com
2%
FirstLast@marshmma.comJohnDoe@marshmma.com
1%

Frequently Asked Questions

Where is Marsh McLennan Agency - St. Louis's headquarters located?

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Marsh McLennan Agency - St. Louis's main headquarters is located at 825 Maryville Centre Drive Suite 200 Chesterfield, Missouri 63017 United States. The company has employees across 3 continents, including North AmericaEuropeAfrica.

What is Marsh McLennan Agency - St. Louis's official website and social media links?

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Marsh McLennan Agency - St. Louis's official website is marshmma.com and has social profiles on LinkedIn.

What is Marsh McLennan Agency - St. Louis's SIC code NAICS code?

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Marsh McLennan Agency - St. Louis's SIC code is 6411 - Insurance Agents, Brokers, and Service NAICS code is 524 - Insurance Carriers and Related Activities.

How many employees does Marsh McLennan Agency - St. Louis have currently?

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As of February 2026, Marsh McLennan Agency - St. Louis has approximately 201 employees across 3 continents, including North AmericaEuropeAfrica. Key team members include Vice President & Practice Leader, Private Client Benefit Services: K. J. G.Vice President Client Service Manager: C. W.Vice President And Producer: P. M.. Explore Marsh McLennan Agency - St. Louis's employee directory with LeadIQ.

What industry does Marsh McLennan Agency - St. Louis belong to?

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Marsh McLennan Agency - St. Louis operates in the Insurance industry.

What technology does Marsh McLennan Agency - St. Louis use?

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Marsh McLennan Agency - St. Louis's tech stack includes DemandbaseQlikViewAdobe After EffectsPHPKhorosMicrosoft ASP.NETAddThisTwitter.

What is Marsh McLennan Agency - St. Louis's email format?

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Marsh McLennan Agency - St. Louis's email format typically follows the pattern of FLast@jwterrill.com. Find more Marsh McLennan Agency - St. Louis email formats with LeadIQ.

Marsh McLennan Agency - St. Louis

InsuranceMissouri, United States201-500 Employees

Marsh & McLennan Agency - St. Louis is a full-service provider of risk management and employee benefit solutions. Our comprehensive list of services includes commercial insurance, personal insurance, surety bonds, loss control services, risk management consulting, employee benefit plans and administration of benefit programs for self-insured businesses.

Founded in 1972, J.W. Terrill has built a tradition of customer service and commitment to employees to become one of the largest independent brokerages in the United States. In 2015 J.W. Terrill joined Marsh & McLennan Agency, a subsidiary of Marsh, a global leader in insurance broking and risk management. Based in St. Louis, Missouri, J.W. Terrill serves accounts with premiums totaling over $514 million with a staff of 200 employees.

Section iconCompany Overview

Headquarters
825 Maryville Centre Drive Suite 200 Chesterfield, Missouri 63017 United States
SIC Code
6411 - Insurance Agents, Brokers, and Service
NAICS Code
524 - Insurance Carriers and Related Activities
Employees
201-500

Section iconFunding & Financials

  • $250M$500M

    Marsh McLennan Agency - St. Louis's revenue is estimated to be in the range of $250M$500M

Section iconFunding & Financials

  • $250M$500M

    Marsh McLennan Agency - St. Louis's revenue is estimated to be in the range of $250M$500M

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