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/IA/WASHINGTON

Washington ZIP code, Iowa

The ZIP code for Washington, IA is 52353, and its area code is 319.

USPS city name
1 ZIP code
Population
7,290
Area code
319
State
Iowa

Washington in numbers

About 7,290 people live in Washington, in 3,163 households. The median household income is $55,373 a year, 26% below the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $152,300 (27% below the Iowa median), and median gross rent is $968 a month. The median age is 42.5; 23.6% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 19 minutes.

Population7,290Washington7,290
Households3,163Washington3,163
Median age42.5Washington42.5Iowa38.6US 38.9
Median household income$55,373Washington$55,373Iowa$75,059US $80,734
Median home value$152,300Washington$152,300Iowa$208,000US $332,700
Median gross rent$968Washington$968Iowa$972US $1,413
Bachelor's degree or higher23.6%Washington23.6%Iowa31.4%US 35.7%
Mean commute18.8 minWashington18.8 minIowa19.8 minUS 26.4 min
Population density1,344 / sq miWashington1,344 / sq mi

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

ZIP codes addressed as Washington

ZIP codes with the USPS city name Washington
ZIP City Type Population Median income Median home
52353 Washington , IA Standard 9,241 $63,047 $160,500

Map of Washington ZIP codes

52353

The ZIP codes of Washington, IA, 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 Washington

The nearest larger towns are Mount Pleasant (8,951 people, 24 mi), Fairfield (9,456 people, 25 mi) and Iowa City (75,752 people, 26 mi).

Towns near Washington
TownPopulationDistance
Kalona 2,692 13.1 mi
Mount Pleasant 8,951 24.4 mi
Fairfield 9,456 24.6 mi
Iowa City 75,752 26.1 mi
Coralville 23,234 28.1 mi
Tiffin 5,737 28.2 mi
West Liberty 3,776 29.3 mi

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

Cite this page

zipcodes.pro. “Washington, IA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ia/washington

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