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/IL/WASHINGTON

Washington ZIP code, Illinois

The ZIP code for Washington, IL is 61571, and its area code is 309.

USPS city name
1 ZIP code
Population
15,919
Area code
309

Washington in numbers

About 15,919 people live in Washington, in 6,053 households. The median household income is $95,179 a year, 14% above the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $221,900 (16% below the Illinois median), and median gross rent is $1,155 a month. The median age is 38.2; 43.7% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 20 minutes.

Population15,919Washington15,919
Households6,053Washington6,053
Median age38.2Washington38.2Illinois39.0US 38.9
Median household income$95,179Washington$95,179Illinois$83,390US $80,734
Median home value$221,900Washington$221,900Illinois$263,300US $332,700
Median gross rent$1,155Washington$1,155Illinois$1,274US $1,413
Bachelor's degree or higher43.7%Washington43.7%Illinois37.8%US 35.7%
Mean commute19.6 minWashington19.6 minIllinois27.8 minUS 26.4 min
Population density1,861 / sq miWashington1,861 / 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
61571 Washington , IL Standard 24,470 $90,386 $204,300

Map of Washington ZIP codes

61571

The ZIP codes of Washington, IL, 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 East Peoria (22,324 people, 6.1 mi), Morton (16,595 people, 6.6 mi) and Peoria (112,169 people, 10 mi).

Towns near Washington
TownPopulationDistance
Germantown Hills 3,436 4.6 mi
East Peoria 22,324 6.1 mi
Morton 16,595 6.6 mi
Metamora 4,159 7.0 mi
Peoria Heights 5,825 7.7 mi
Eureka 5,007 8.2 mi
Creve Coeur 4,621 10.0 mi
Peoria 112,169 10.1 mi
West Peoria 4,238 10.8 mi
Bartonville 5,841 12.7 mi
Pekin 31,781 13.8 mi
Chillicothe 5,900 14.9 mi
El Paso 2,917 21.9 mi
Normal 53,569 26.5 mi

More nearby: every ZIP code in Tazewell County · Illinois ZIP codes

Cite this page

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

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