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/WA/UNION

Union ZIP code, Washington

The ZIP code for Union, WA is 98592, and its area code is 360.

USPS city name
1 ZIP code
Population
457
Area code
360

Union in numbers

About 457 people live in Union, in 224 households. The median owner-occupied home is valued at $375,400 (34% below the Washington median). The median age is 71.7; 37.5% of adults 25 and over hold a bachelor's degree or higher (39.6% across Washington).

Population457Union457
Households224Union224
Median age71.7Union71.7Washington38.3US 38.9
Median home value$375,400Union$375,400Washington$564,600US $332,700
Bachelor's degree or higher37.5%Union37.5%Washington39.6%US 35.7%
Population density281 / sq miUnion281 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Union CDP. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Union

ZIP codes with the USPS city name Union
ZIP City Type Population Median income Median home
98592 Union , WA Standard 2,059 $138,370 $558,400

Map of Union ZIP codes

98592

The ZIP codes of Union, WA, 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 Union

The nearest larger towns are Skokomish (560 people, 3.3 mi), Shelton (10,612 people, 8.5 mi) and Allyn (2,404 people, 12 mi).

Towns near Union
TownPopulationDistance
Shelton 10,612 8.5 mi
Belfair 4,557 13.2 mi
Key Center 3,544 16.0 mi
Longbranch 4,638 17.6 mi
Wauna 4,805 20.1 mi
Artondale 14,073 20.9 mi
Rosedale 4,208 21.7 mi
Fox Island 3,414 21.9 mi
Bremerton 44,830 22.1 mi
Gig Harbor 12,424 23.2 mi
Canterwood 2,971 23.2 mi
Olympia 55,951 23.2 mi
Bethel 4,394 24.3 mi
Wollochet 6,689 24.7 mi

More nearby: every ZIP code in Mason County · Washington ZIP codes

Cite this page

zipcodes.pro. “Union, WA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/wa/union

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