Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/WY/BOULDER

Boulder ZIP code, Wyoming

The ZIP code for Boulder, WY is 82923.

USPS city name
1 ZIP code
Population
588
State
Wyoming

Boulder in numbers

About 588 people live in Boulder, in 304 households. The median owner-occupied home is valued at $589,900 (90% above the Wyoming median).

Population588Boulder588
Households304Boulder304
Median home value$589,900Boulder$589,900Wyoming$309,700US $332,700

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the ZIP code addressed as Boulder. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Boulder

ZIP codes with the USPS city name Boulder
ZIP City Type Population Median income Median home
82923 Boulder , WY Standard 588 — $589,900

Map of Boulder ZIP codes

82923

The ZIP codes of Boulder, WY, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Boulder

The nearest larger towns are Pinedale (2,048 people, 12 mi), Marbleton (967 people, 24 mi) and Fort Washakie (1,219 people, 44 mi).

More nearby: every ZIP code in Sublette County · Wyoming ZIP codes

Cite this page

zipcodes.pro. “Boulder, WY ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/wy/boulder

Underlying data is public domain or openly licensed — sources, vintages and licences.