Group O headquarters details
- Street address
- 4905 77th Avenue
- City
- Milan
- State / region
- Illinois
- ZIP / postal code
- 61264-3250
- Country
- United States
- Phone
- +1 800 521 4248
- Founded
- 1974
- Website
- groupo.com
- linkedin.com/company/group-o
Location map
Open in Google MapsAll Group O office locations
| City | State / region | Country | Type |
|---|---|---|---|
| Milan HQ | Illinois | United States | Headquarters |
Showing the headquarters of 17 recorded locations. See every location in GraphIQ →
About Group O
Group O is headquartered in Milan, Illinois, United States. Founded in 1974, the company has 17 recorded locations across 2+ countries and employs approximately 1,500 people worldwide.
Where is Group O's main office?
Group O's main headquarters office is located at 4905 77th Avenue, Milan, Illinois 61264-3250, United States. This is the company's primary corporate address.
Group O regional offices
Beyond its headquarters in Milan, Group O has recorded locations in United States and Thailand.
Group O contact information
The main switchboard for Group O headquarters can be reached at +1 800 521 4248. Official website: groupo.com.
What does Group O do?
Group O, Inc. provides marketing, supply chain, and packaging operations. The Company offers marketing analytics, enterprise print optimizations, direct response optimization, consumer and trade fulfillment, forward logistics, reverse logistics, and global sourcing services. Group O operates in the United States.
Frequently asked questions
Where is Group O headquarters?
Group O's headquarters is located at 4905 77th Avenue, Milan, Illinois 61264-3250, United States.
How many offices does Group O have?
GraphIQ records 17 locations for Group O across 2+ countries, as of October 2026.
What is Group O's corporate address?
The corporate headquarters address is 4905 77th Avenue, Milan, Illinois 61264-3250, United States.
When was Group O founded?
Group O was founded in 1974 and employs approximately 1,500 people.
What is Group O's phone number?
The main phone number for Group O headquarters is +1 800 521 4248.
How many employees does Group O have?
Group O has approximately 1,500 employees (GraphIQ estimate, 2026).