Tetra Tech headquarters details
- Street address
- 3475 East Foothill Boulevard
- City
- Pasadena
- State / region
- California
- ZIP / postal code
- 91107-6024
- Country
- United States
- Phone
- +1 626 351 4664
- Founded
- 1966
- Website
- tetratech.com
- Stock
- NASDAQ: TTEK
- linkedin.com/company/tetra-tech
Location map
Open in Google MapsAll Tetra Tech office locations
| City | State / region | Country | Type |
|---|---|---|---|
| Pasadena HQ | California | United States | Headquarters |
Showing the headquarters of 497 recorded locations. See every location in GraphIQ →
About Tetra Tech
Tetra Tech (NASDAQ: TTEK) is headquartered in Pasadena, California, United States. Founded in 1966, the company has 497 recorded locations across 11+ countries and employs approximately 25,000 people worldwide.
Where is Tetra Tech's main office?
Tetra Tech's main headquarters office is located at 3475 East Foothill Boulevard, Pasadena, California 91107-6024, United States. This is the company's primary corporate address.
Tetra Tech regional offices
Beyond its headquarters in Pasadena, Tetra Tech has recorded locations in United States, Australia, Brazil, Canada, France, India, Indonesia, Mexico and 3 other countries.
Tetra Tech contact information
The main switchboard for Tetra Tech headquarters can be reached at +1 626 351 4664. Official website: tetratech.com.
What does Tetra Tech do?
Tetra Tech, Inc. provides specialized management consulting and engineering services. The Company focuses on water, environment, infrastructure, resource management, energy, and international development services. Tetra Tech serves government and commercial clients worldwide.
Tetra Tech competitors & similar companies
Frequently asked questions
Where is Tetra Tech headquarters?
Tetra Tech's headquarters is located at 3475 East Foothill Boulevard, Pasadena, California 91107-6024, United States.
How many offices does Tetra Tech have?
GraphIQ records 497 locations for Tetra Tech across 11+ countries, as of October 2026.
What is Tetra Tech's corporate address?
The corporate headquarters address is 3475 East Foothill Boulevard, Pasadena, California 91107-6024, United States.
When was Tetra Tech founded?
Tetra Tech was founded in 1966 and employs approximately 25,000 people.
What is Tetra Tech's phone number?
The main phone number for Tetra Tech headquarters is +1 626 351 4664.
How many employees does Tetra Tech have?
Tetra Tech has approximately 25,000 employees (GraphIQ estimate, 2026).
Is Tetra Tech a public company?
Yes. Tetra Tech is publicly traded on NASDAQ under the ticker TTEK.