Graycor
Construction · Oakbrook Terrace, Illinois
Products & Services
About Graycor
With a century of experience, Graycor is a trusted leader in construction, dedicated to earning the trust of clients and building enduring partnerships.
Its primary NAICS classification is 541340 (Drafting Services). Graycor is one of 6,047 Construction companies listed in Illinois.
Business Contact Information
- Phone
- (630) 684-7110
- Fax
- (678) 669-2253
- Website
- www.graycor.com
- www.linkedin.com/company/graycor
- Address
- 2 Mid America Plz Ste 400, Oakbrook Terrace, Illinois, 60181, United States
Industry & Classification
- Industry
- Construction
- Sector
- Construction
- Segment
- Industrial construction
NAICS Codes
- 541340Drafting Services
- 541310Architectural Services
SIC Codes
- 8741Office Administrative Services
- 8712Architectural Services
Company Details
- Employees
- 1,000
Graycor: frequently asked questions
What does Graycor do?
With a century of experience, Graycor is a trusted leader in construction, dedicated to earning the trust of clients and building enduring partnerships.
Where is Graycor located?
Graycor is located at 2 Mid America Plz Ste 400, Oakbrook Terrace, Illinois, 60181, United States.
How many employees does Graycor have?
Graycor has about 1,000 employees.
What industry is Graycor in?
Graycor is in the Construction / Construction industry, and its primary NAICS code is 541340 (Drafting Services).
How can I contact Graycor?
Its website is www.graycor.com and its phone number is (630) 684-7110.
What companies are similar to Graycor?
Other large construction companies in Illinois include Clayco Inc, Tecta America Corp, Enppi and Power Construction.
Largest construction companies in Illinois
Largest companies in Illinois
Largest construction 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.
Own this business?
Keep your profile accurate — or ask us to take it down. We acknowledge requests within 7 days and resolve them within 30 days.
Prefer email? privacy@facturmfg.com
Add this badge to your website — show visitors you're listed on Factur Data.