---
type: Body
title: "Department of the Interior"
classification: "executive-department"
chamber: "executive"
code: "EXEC-INTERIOR"
head: "us/executive/interior/secretary"
sources:
  - field: definition
    source: "5 U.S.C. § 101 (Executive departments)"
confidence: official
tags: [body, executive, executive-department]
timestamp: "2026-07-03"
---

# Department of the Interior

Executive department, established by 5 U.S.C. § 101. Headed by the [Secretary of the Interior](/us/executive/interior/secretary.md).

## Referenced by the U.S. Code

590 sections of the U.S. Code reference this department. A sample:

- [2 U.S.C. § 901](/legal/us/code/title-02/chapter-20/section-901.md)
- [2 U.S.C. § 905](/legal/us/code/title-02/chapter-20/section-905.md)
- [5 U.S.C. § 101](/legal/us/code/title-05/chapter-1/section-101.md)
- [5 U.S.C. § 406](/legal/us/code/title-05/chapter-4/section-406.md)
- [5 U.S.C. § 422](/legal/us/code/title-05/chapter-4/section-422.md)
- [5 U.S.C. § 5315](/legal/us/code/title-05/chapter-53/section-5315.md)
- [5 U.S.C. § 5316](/legal/us/code/title-05/chapter-53/section-5316.md)
- [5 U.S.C. § 5332a](/legal/us/code/title-05/chapter-53/section-5332a.md)
- [5 U.S.C. § 5541](/legal/us/code/title-05/chapter-55/section-5541.md)
- [5 U.S.C. § 5542](/legal/us/code/title-05/chapter-55/section-5542.md)
- [5 U.S.C. § 5544](/legal/us/code/title-05/chapter-55/section-5544.md)
- [5 U.S.C. § 5545c](/legal/us/code/title-05/chapter-55/section-5545c.md)
- [5 U.S.C. § 8336](/legal/us/code/title-05/chapter-83/section-8336.md)
- [5 U.S.C. § 8401](/legal/us/code/title-05/chapter-84/section-8401.md)
- [5 U.S.C. § 9601](/legal/us/code/title-05/chapter-96/section-9601.md)
- [6 U.S.C. § 771](/legal/us/code/title-06/chapter-2/section-771.md)
- [7 U.S.C. § 1035](/legal/us/code/title-07/chapter-33/section-1035.md)
- [7 U.S.C. § 1334](/legal/us/code/title-07/chapter-35/section-1334.md)
- [7 U.S.C. § 136a](/legal/us/code/title-07/chapter-6/section-136a.md)
- [7 U.S.C. § 178b](/legal/us/code/title-07/chapter-8a/section-178b.md)
- [7 U.S.C. § 178i](/legal/us/code/title-07/chapter-8a/section-178i.md)
- [7 U.S.C. § 1926d](/legal/us/code/title-07/chapter-50/section-1926d.md)
- [7 U.S.C. § 2204b–3](/legal/us/code/title-07/chapter-55/section-2204b-3.md)
- [7 U.S.C. § 6921](/legal/us/code/title-07/chapter-98/section-6921.md)
- [7 U.S.C. § 8108](/legal/us/code/title-07/chapter-107/section-8108.md)
- …and 565 more (full set in data/section_authority_edges.jsonl)