---
kind: "unit"
title: "39"
title_heading: "Postal Service"
key: "ptIV"
level: "part"
label: "Part IV"
heading: "Mail Matter"
release: "119-102"
url: "https://uscodex.org/usc/39/ptIV"
sections_count: 79
---

# Part IV — Mail Matter

Title 39 — Postal Service

## Contents

- [Chapter 30 — Nonmailable Matter](/usc/39/ptIV-ch30.md)
- [Chapter 32 — Penalty and Franked Mail](/usc/39/ptIV-ch32.md)
- [Chapter 34 — Armed Forces and Free Postage](/usc/39/ptIV-ch34.md)
- [Chapter 36 — Postal Rates, Classes, and Services](/usc/39/ptIV-ch36.md)
- [Chapter 37 — Nonpostal Services](/usc/39/ptIV-ch37.md)