United States Department of the Interior
U.S. federal executive department
The United States Department of the Interior (DOI) is an executive department of the U.S. federal government responsible for the management and conservation of most federal lands and natural resources. It also administers programs relating to Native Americans, Alaska Natives, Native Hawaiians, and four of the five inhabited 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. The department was created on March 3, 1849. It is headquartered at the Main Interior Building, located at 1849 C Street NW in Washington, D.C.
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 interior secretary is Doug Burgum, who was sworn in on February 1, 2025.
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, 433 national parks, monuments, historical sites, etc. through the National Park Service, and 544 national wildlife refuges through the Fish and Wildlife Service. The largest land management agency is the Bureau of Land Management, managing about one-eighth of the land in the United States.
The public source identifies “United States Department of the Interior” as u.S. federal executive department. This brief keeps that definition visible, then builds a research path around United, States and Department.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Aug 11, 2026. The linked authority identifier is Q608427. VIAF identifies the subject as 140720803. The Library of Congress control number is n80126051. Authority coordinates are 38.894, -77.043. 2 of 5 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1849, 2025 and 2004.
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This entry incorporates text from “United States Department of the Interior” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.