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Products & Services
About Gltsa
Professional TeleServices Education to the Great Lakes Region and Beyond GLTSA provides leading edge educational content to its members in the teleservice, telephone answering service, and contact center industry. All Services & Locations Welcome!Even if you are located outside of our highlighted areas, we still welcome you to connect.
Its primary NAICS classification is 813910 (Business Associations). Gltsa is one of 508,039 Industrial & mechanical companies listed in Illinois.
Business Contact Information
- Phone
- +1 (618) 6968174
- Website
- gltsa.org
- facebook.com/gltsaorg
- Address
- PO Box 356, Alton, Illinois, 62002, United States
Industry & Classification
- Industry
- Industrial & mechanical
- Sector
- Commercial services
- Segment
- Office service
NAICS Codes
- 81Other Services (except Public Administration)
- 8139Business, Professional, Labor, Political, and Similar Organizations
- 813910Business Associations
SIC Codes
- 86Membership Organizations
- 861Business Associations
- 8611
Company Details
- Employees
- 19 (11-20)
- Annual Revenue
- $2.7M ($1M-$5M)
Gltsa: frequently asked questions
What does Gltsa do?
Professional TeleServices Education to the Great Lakes Region and Beyond GLTSA provides leading edge educational content to its members in the teleservice, telephone answering service, and contact center industry. Even if you are located outside of our highlighted areas, we still welcome you to connect.
Where is Gltsa located?
Gltsa is headquartered at PO Box 356, Alton, Illinois, 62002, United States.
How many employees does Gltsa have?
Gltsa has about 19 employees (the 11-20 range).
What is Gltsa's annual revenue?
Gltsa's annual revenue is estimated at $2.7M (the $1M-$5M range).
What industry is Gltsa in?
Gltsa is in the Industrial & mechanical / Commercial services industry, and its primary NAICS code is 813910 (Business Associations).
How can I contact Gltsa?
Its website is gltsa.org and its phone number is +1 (618) 6968174.
Largest companies in Illinois
Largest industrial & mechanical companies
Manufacturing sales in Illinois, 2026
In Illinois, Factur's 2026 study counted 74 manufacturing quotes worth $11.8M and 14 purchase orders over 12 months: 19% of quotes became orders, against 21% nationally. See the Illinois data.
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