How to Write a Wyoming Address (With Examples)

Address basics  |   |  2 min read

Writing a Wyoming address correctly comes down to three things: the right street format, the two-letter code WY and a ZIP code that matches the city.

The standard format

RECIPIENT NAME STREET NUMBER AND NAME, UNIT CITY, WY ZIP CODE

The state is always written as WY, two capital letters with no periods. USPS prefers the city, state and ZIP on the same final line.

Example: Cheyenne

Emily Lee 8490 Washington Way Cheyenne, WY 82007

Example with an apartment in Casper

Kevin Davis 1598 Cedar Ln Apt 4B Casper, WY 82601

Example with a PO Box

Olivia Johnson PO Box 5703 Cheyenne, WY 82009

PO Boxes often have their own ZIP code, separate from street addresses in the same town. Check the ZIP with the post office that holds the box.

Common mistakes

  • Writing the full state name or an old abbreviation instead of WY.
  • Putting the apartment number on a line below the street address.
  • Using a ZIP code from a neighboring city. One city can have many codes, but each street belongs to a specific one.

Counties and local details

Wyoming is divided into 23 counties. The county does not appear in a mailing address, but it matters for sales tax, elections and some shipping rules, so many business systems store it separately.

Create realistic Wyoming addresses for testing, with real cities, counties and ZIP codes.

Generate Wyoming addresses