ZIP+4

Geography & Places abbreviation · Address

ZIP+4
Stands forZIP plus four-digit add-on
CategoriesGeography & Places

ZIP+4 stands for ZIP plus four-digit add-on, an address abbreviation.

Nine-digit ZIP code introduced in 1983, adding a hyphen and four digits that identify a city block, a building, a floor or a group of PO boxes, as in 20500-0003.

Example: The form requires a ZIP+4, such as 94043-1351, for faster processing.

Usage notes

Businesses that presort mail with ZIP+4 codes qualify for lower postage. Most individuals never need the add-on, which USPS lookup tools supply automatically.

More address abbreviations

  • Aly – Alley
  • Anx – Annex
  • Apdo. – Apartado de correos (post office box)
  • Apt – Apartment
  • Arc – Arcade
  • Attn – Attention
  • Ave – Avenue
  • BFPO – British Forces Post Office
  • Bldg – Building
  • Blf – Bluff
  • Blvd – Boulevard
  • Bnd – Bend

See all 118 address abbreviations →

Edited by the AbbreviationList.com team. Spotted an error or a missing meaning? Contact us.