# 39 CFR § 320.1: Definitions

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-39-320.1

## Section

- **Citation:** 39 CFR § 320.1
- **Heading:** Definitions
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 39—Postal Service > CHAPTER I—UNITED STATES POSTAL SERVICE > SUBCHAPTER E—RESTRICTIONS ON PRIVATE CARRIAGE OF LETTERS > PART 320—SUSPENSION OF THE PRIVATE EXPRESS STATUTES

## Text

The definitions in § 310.1 apply to part 320 as well.
1
1 Several of the items enumerated in § 310.1(a)(7) do not self-evidently lie outside of the definition of “letter”. To the extent, however, that there is any question whether these items may properly be excluded by definition, the Postal Service has determined by adoption of these regulations that the restrictions of the Private Express Statutes are suspended pursuant to 39 U.S.C. 601(b).
[39 FR 33212, Sept. 16, 1974]

## Nearby sections

- [39 CFR § 310.1 § 310.1 Definitions.](https://www.frixlaw.com/law-library/statutes/ecfr-39-310.1.md)
- [39 CFR § 310.2 § 310.2 Unlawful carriage of letters.](https://www.frixlaw.com/law-library/statutes/ecfr-39-310.2.md)
- [39 CFR § 310.3 § 310.3 Exceptions.](https://www.frixlaw.com/law-library/statutes/ecfr-39-310.3.md)
- [39 CFR § 310.4 § 310.4 Responsibility of carriers.](https://www.frixlaw.com/law-library/statutes/ecfr-39-310.4.md)
- [39 CFR § 310.5 § 310.5 Payment of postage on violation.](https://www.frixlaw.com/law-library/statutes/ecfr-39-310.5.md)
- [39 CFR § 310.6 § 310.6 Advisory opinions.](https://www.frixlaw.com/law-library/statutes/ecfr-39-310.6.md)
- [39 CFR § 310.7 § 310.7 Amendment of regulations.](https://www.frixlaw.com/law-library/statutes/ecfr-39-310.7.md)
- [39 CFR § 320.1 § 320.1 Definitions.](https://www.frixlaw.com/law-library/statutes/ecfr-39-320.1.md)
- [39 CFR § 320.2 § 320.2 Suspension for certain data processing materials.](https://www.frixlaw.com/law-library/statutes/ecfr-39-320.2.md)
- [39 CFR § 320.3 § 320.3 Operations under suspension for certain data processing materials.](https://www.frixlaw.com/law-library/statutes/ecfr-39-320.3.md)
- [39 CFR § 320.4 § 320.4 Suspension for certain letters of college and university organizations.](https://www.frixlaw.com/law-library/statutes/ecfr-39-320.4.md)
- [39 CFR § 320.5 § 320.5 Suspension for certain international-ocean carrier-related documents.](https://www.frixlaw.com/law-library/statutes/ecfr-39-320.5.md)
- [39 CFR § 320.6 § 320.6 Suspension for extremely urgent letters.](https://www.frixlaw.com/law-library/statutes/ecfr-39-320.6.md)
- [39 CFR § 320.7 § 320.7 Suspension for advertisements accompanying parcels or periodicals.](https://www.frixlaw.com/law-library/statutes/ecfr-39-320.7.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-39-320.1. Check the current official text before relying on it. Not legal advice.