United States Department of the Interior

The United States Department of the Interior (DOI) is one of the executive departments of the U.S. federal government headquartered at the Main Interior Building, located at 1849 C Street NW in Washington, D.C. It is responsible for the management and conservation of most federal lands and natural resources, and the administration of programs relating to Native Americans, Alaska Natives, Native Hawaiians, territorial affairs, and insular areas of the United States, as well as programs related to historic preservation. About 75% of federal public land is managed by the department, with most of the remainder managed by the Department of Agriculture's Forest Service.[3] The department was created on March 3, 1849.

United States Department of the Interior
Seal of the U.S. Department of the Interior
Flag of the U.S. Department of the Interior

Main Interior Building
Agency overview
FormedMarch 3, 1849; 174 years ago (1849-03-03)
JurisdictionU.S. Federal Government
  • Main Interior Building
  • 1849 C Street NW
  • Washington, D.C., U.S.
  • 20240

38°53′37.11″N 77°2′33.33″W
Employees67,026 (2022)[1]
Annual budget$17.6 billion (2022)[2]
Agency executives

The department is headed by the secretary of the interior, who reports directly to the president of the United States and is a member of the president's Cabinet. The current secretary is Deb Haaland.

As of mid-2004, the department managed 507 million acres (2,050,000 km2) of surface land, or about one-fifth of the land in the United States. It manages 476 dams and 348 reservoirs through the Bureau of Reclamation, 424 national parks, monuments, historical sites, etc. through the National Park Service, and 544 national wildlife refuges through the Fish and Wildlife Service.

Despite its name, the Department of the Interior has a different role from that of the interior ministries of other nations, which are usually responsible for police matters and internal security. In the United States, national security and immigration functions are performed by the Department of Homeland Security primarily and the Department of Justice secondarily. The Department of the Interior has often been humorously called "the Department of Everything Else" because of its broad range of responsibilities.[4]

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