Washington, IL ZIP Codes

One ZIP code serves Washington, Illinois: 61571. Together they are home to 24,470 residents in 9,730 households. That is more than the 15,919 people counted inside Washington city limits, because these ZIP codes reach past its boundary.

Washington city limits (Census)

MeasureCensus figure
Residents15,919
Households6,053
Median household income$95,179
Median home value$221,900
Median age38.2
Median rent$1,155

All 1 ZIP codes together

MeasureValue
Residents (sum of ZIP codes)24,470
Households (sum of ZIP codes)9,730
Median household income, range across ZIP codes$90,386 (61571) to $90,386 (61571)
Household-weighted average of ZIP medians (an approximation, not a true median)$90,386
Homeowners80.5%
Households with kids under 1830.2%
Moved in the past year8.1%
Carrier routes in EDDM2GO's route librarynot loaded yet

Every ZIP code in Washington

ZIPMailing cityResidentsHouseholdsMedian incomeHome valueHomeownersWith kidsNew moversCarrier routesMailboxesWhy listed
61571Washington24,4709,730$90,386$204,30080.5%30.2%8.1%——16% of its land; mailing city

A ZIP code is listed for Washington when at least 10% of its land lies inside Washington city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Washington. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Washington.

Counties

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EDDM guides

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Frequently asked questions

What ZIP codes are in Washington, IL?
61571. A ZIP code is listed for Washington when at least 10% of its land lies inside Washington city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Washington.
What is the population of Washington, IL?
The Census Bureau counts 15,919 residents inside Washington city limits (ACS 2020–2024). The 1 ZIP code that serve Washington hold 24,470 residents in all.
What is the median household income in Washington, IL?
$95,179 inside Washington city limits, per the Census Bureau. Across its ZIP codes the medians run from $90,386 to $90,386.

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.