---
kind: "unit"
title: "5"
title_heading: "Administrative Personnel"
key: "chXXV"
level: "chapter"
label: "Chapter XXV"
heading: "Department of the Interior"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/5/chXXV"
sections_count: 5
---

# Chapter XXV — Department of the Interior

Title 5 C.F.R. — Administrative Personnel

## Contents

- [Part 3500 — Part 3500 [reserved]](/cfr/5/chXXV-part3500.md)
- [Part 3501 — Supplemental Standards of Ethical Conduct for Employees of the Department of the Interior](/cfr/5/chXXV-part3501.md)
- [Part 3502-3599 — Parts 3502-3599 [reserved]](/cfr/5/chXXV-part3502-3599.md)