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/ANDERSON-ISLAND

Anderson Island ZIP code, Washington

The ZIP code for Anderson Island, WA is 98303.

USPS city name
1 ZIP code
Population
1,448

Anderson Island in numbers

About 1,448 people live in Anderson Island, in 819 households. The median household income is $80,282 a year, 18% below the Washington median of $98,141 (US: $80,734). The median owner-occupied home is valued at $546,300 (3% below the Washington median). The median age is 61.6; 44.0% of adults 25 and over hold a bachelor's degree or higher (39.6% across Washington); the average commute takes 36 minutes.

Population1,448Anderson Island1,448
Households819Anderson Island819
Median age61.6Anderson Island61.6Washington38.3US 38.9
Median household income$80,282Anderson Island$80,282Washington$98,141US $80,734
Median home value$546,300Anderson Island$546,300Washington$564,600US $332,700
Bachelor's degree or higher44.0%Anderson Island44.0%Washington39.6%US 35.7%
Mean commute35.5 minAnderson Island35.5 minWashington26.6 minUS 26.4 min
Population density182 / sq miAnderson Island182 / sq mi

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

ZIP codes addressed as Anderson Island

ZIP codes with the USPS city name Anderson Island
ZIP City Type Population Median income Median home
98303 Anderson Island , WA Standard 1,448 $80,282 $546,300

Map of Anderson Island ZIP codes

98303

The ZIP codes of Anderson Island, 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 Anderson Island

The nearest larger towns are DuPont (9,931 people, 3.3 mi), Steilacoom (6,686 people, 4.4 mi) and North Fort Lewis (6,337 people, 4.5 mi).

Towns near Anderson Island
TownPopulationDistance
DuPont 9,931 3.3 mi
Steilacoom 6,686 4.4 mi
North Fort Lewis 6,337 4.5 mi
Longbranch 4,638 6.5 mi
Fort Lewis 15,167 6.6 mi
Lakewood 62,937 7.3 mi
Fox Island 3,414 7.6 mi
University Place 34,911 7.8 mi
Tanglewilde 6,314 8.3 mi
McChord AFB 2,999 9.0 mi
Lacey 57,737 9.2 mi
Fircrest 7,069 9.6 mi
Wollochet 6,689 10.4 mi
Artondale 14,073 10.7 mi

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

Cite this page

zipcodes.pro. “Anderson Island, WA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/wa/anderson-island

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