Glossary
Postal Clerk Terms & Vocabulary
15 essential postal clerk terms with plain-English definitions: the vocabulary you’ll hear in training and on day one.
Key postal clerk vocabulary
These 15 terms come up constantly in postal clerk training, on the job and in interviews. Knowing them helps you follow instructions, document accurately and sound prepared.
- Certified Mail
- Proof of mailing and delivery.
- Customs form
- International form.
- Flat rate box
- Fixed-price box.
- Hazmat
- Restricted items.
- Hold mail
- Pausing delivery.
- Insurance
- Coverage for loss.
- Mail class
- First-Class, Priority and more.
- Money order
- Prepaid payment.
- PO Box
- Post office box.
- Postage
- Mailing fee.
- Priority Mail
- Fast mail class.
- Retail window
- Customer counter.
- Tracking
- Following a package.
- USPS
- United States Postal Service.
- ZIP Code
- Postal code.
Practice these terms
Test yourself with the free Postal Clerk practice test: it includes vocabulary questions built from this list. For a complete course, see Postal Clerk training.
Browse terms from every career in our career glossary.