Washington, Illinois

Washington population, 2020 to 2024

Washington lost 207 residents from July 2020 to July 2024, a change of -1.3%. In the latest year it moved by +4. Among 330 Illinois places of 5,000 or more, that growth ranks 183rd; the median place changed by -0.9%. The median place of 5,000+ in Illinois has 14,760 people, so Washington is 1.1 times that size.

Washington covers 8.55 square miles of land, for 1,855 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Washington is less dense than the typical town.

What county Washington is in

All of Washington's residents live in Tazewell County, which had 129,821 residents in 2024. Washington holds 12.2% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Washington

1 ZIP Code Tabulation Area (ZCTA) overlaps Washington by at least 10% of the ZCTA's or the city's land: 61571. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Washington is

The Census internal point of Washington is at 40.706400, -89.433500. Springfield, the capital, is 65.0 miles S in a straight line. The nearest larger place is East Peoria, IL (22,024 people), 6.1 miles away. The nearest city of 100,000 or more is Peoria, IL, 10.1 miles away.

Daylight in Washington

At 40.71° N, Washington gets about 15 h 06 min of daylight around the June solstice and 9 h 15 min around the December solstice, a swing of 5 h 50 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Washington

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Germantown Hills, 4.6 miles away, with 3,450 people.