The Mark-Costello Company Employee Directory

The Mark-Costello Company Global Highlights

Location

Employees

North America

8

• United States Of America
  8

Europe

1

• United Kingdom Of Great Britain And Northern Ireland
  1

North America accounts for 89% of The Mark-Costello Company's workforce, followed by Europe (11%).

The Mark-Costello Company's Leadership

• 
  R. C.

  Director

  Mobile Phone

  Email
• 
  M. M.

  Administrator

  Mobile Phone

  Email

The Mark-Costello Company Employee Metrics

• Business
• Business Development
• Other
• Community & Social Services

Business is the largest department at 33% of profiles with a known department, followed by Business Development (33%) and Community & Social Services (33%).

Contact profiles from The Mark-Costello Company

• 
  R. C.

  Director

  Mobile Phone

  Email

  UNITED KINGDOM, Essex

  Jun 10, 2025
• 
  M. M.

  Administrator

  Mobile Phone

  Email

  Oct 22, 2024

• 1

Frequently Asked Questions

What are the largest departments at The Mark-Costello Company?

Business is the largest department at 33% of profiles with a known department, followed by Business Development (33%) and Community & Social Services (33%).

Where are The Mark-Costello Company's employees located?

The Mark-Costello Company has about 16 employees across 2 continents, most of them in North America. North America accounts for 89% of The Mark-Costello Company's workforce, followed by Europe (11%). By country, the largest groups are United States Of America (89%) and United Kingdom Of Great Britain And Northern Ireland (11%).

How many employees does The Mark-Costello Company have currently?

The Mark-Costello Company has approximately 16 employees as of September 2026. These team members are located across 2 continents, including North America and Europe.

Who are The Mark-Costello Company's key employees and leadership?

As of September 2026, The Mark-Costello Company's key employees include:

• Director: R. C.
• Administrator: M. M.

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What is The Mark-Costello Company's most common email format?

The Mark-Costello Company employees' email format typically follows the pattern of FLast@mark-costello.com. Trying to find reliable and up-to-date employee contact data? Find more The Mark-Costello Company email formats with LeadIQ.

What is The Mark-Costello Company known for?

The Mark-Costello Company was founded in 1956 and operates in the Environmental Services industry. You can contact The Mark-Costello Company's main corporate office by phone at

+1-562-630-****

. Explore The Mark-Costello Company's company overview page for more information.