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/ROCK-ISLAND

Rock Island ZIP code, Washington

The ZIP code for Rock Island, WA is 98850, and its area code is 509.

USPS city name
1 ZIP code
Population
1,251
Area code
509

NANPA lists no telephone rate centre for Rock Island itself, so these are the area codes of the nearest one, Wenatchee (12.8 miles). A town on an area-code boundary can differ from its neighbour.

Rock Island in numbers

About 1,251 people live in Rock Island, in 443 households. The median household income is $69,861 a year, 29% below the Washington median of $98,141 (US: $80,734). The median owner-occupied home is valued at $273,500 (52% below the Washington median), and median gross rent is $1,143 a month. The median age is 37.8; 8.9% of adults 25 and over hold a bachelor's degree or higher (39.6% across Washington); the average commute takes 24 minutes.

Population1,251Rock Island1,251
Households443Rock Island443
Median age37.8Rock Island37.8Washington38.3US 38.9
Median household income$69,861Rock Island$69,861Washington$98,141US $80,734
Median home value$273,500Rock Island$273,500Washington$564,600US $332,700
Median gross rent$1,143Rock Island$1,143Washington$1,760US $1,413
Bachelor's degree or higher8.9%Rock Island8.9%Washington39.6%US 35.7%
Mean commute24.3 minRock Island24.3 minWashington26.6 minUS 26.4 min
Population density1,110 / sq miRock Island1,110 / sq mi

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

ZIP codes addressed as Rock Island

ZIP codes with the USPS city name Rock Island
ZIP City Type Population Median income Median home
98850 Rock Island , WA Standard 2,032 $83,125 $374,700

Map of Rock Island ZIP codes

98850

The ZIP codes of Rock 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 Rock Island

The nearest larger towns are East Wenatchee (14,199 people, 7.3 mi), Wenatchee (35,484 people, 9.8 mi) and Sunnyslope (3,706 people, 13 mi).

Towns near Rock Island
TownPopulationDistance
East Wenatchee 14,199 7.3 mi
Wenatchee 35,484 9.8 mi
Sunnyslope 3,706 13.4 mi
Quincy 7,998 16.7 mi
Cashmere 3,304 18.2 mi
Ephrata 8,560 28.8 mi
Leavenworth 2,569 28.8 mi

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

Cite this page

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

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