Smithsonian Institution headquarters details
- City
- Washington
- State / region
- District of Columbia
- ZIP / postal code
- 20535
- Country
- United States
- Phone
- +1 202 633 1000
- Founded
- 1846
- Website
- si.edu
Location map
Open in Google MapsAll Smithsonian Institution office locations
| City | State / region | Country | Type |
|---|---|---|---|
| Washington HQ | District of Columbia | United States | Headquarters |
Showing the headquarters of 25 recorded locations. See every location in GraphIQ →
About Smithsonian Institution
Smithsonian Institution is headquartered in Washington, District of Columbia, United States. Founded in 1846, the company has 25 recorded locations and employs approximately 5,001 people worldwide.
Where is Smithsonian Institution's main office?
Smithsonian Institution's main headquarters office is located at Washington, District of Columbia 20535, United States. This is the company's primary corporate address.
Smithsonian Institution regional offices
Beyond its headquarters in Washington, Smithsonian Institution has recorded locations in United States.
Smithsonian Institution contact information
The main switchboard for Smithsonian Institution headquarters can be reached at +1 202 633 1000. Official website: si.edu.
What does Smithsonian Institution do?
The Smithsonian Institution (or simply the Smithsonian) is a group of museums, education and research centers, created by the United States federal government "for the increase and diffusion of knowledge". Founded on August 10, 1846, it operates as a trust instrumentality and is not formally a part of any of the three branches of the federal government. The institution is named after its founding donor, British scientist James Smithson. It was originally organized as the United States National Museum, but that name ceased to exist administratively in 1967.
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Frequently asked questions
Where is Smithsonian Institution headquarters?
Smithsonian Institution's headquarters is located at Washington, District of Columbia 20535, United States.
How many offices does Smithsonian Institution have?
GraphIQ records 25 locations for Smithsonian Institution, as of October 2026.
When was Smithsonian Institution founded?
Smithsonian Institution was founded in 1846 and employs approximately 5,001 people.
What is Smithsonian Institution's phone number?
The main phone number for Smithsonian Institution headquarters is +1 202 633 1000.
How many employees does Smithsonian Institution have?
Smithsonian Institution has approximately 5,001 employees (GraphIQ estimate, 2026).