Washington, Illinois

Washington
Denhart Bank Building at 101 Washington Sq.
Motto: 
"Your Pathway To Discovery; Enjoyment And Knowledge"
Location of Washington in Tazewell County, Illinois.
Coordinates: 40°42′36″N 89°24′15″W / 40.71000°N 89.40417°W / 40.71000; -89.40417
CountryUnited States
StateIllinois
CountyTazewell
TownshipWashington
First settled1825
Founded1833 as Holland's Grove
Renamed1837 as Washington
Founded byWilliam Holland Sr.
Named afterGeorge Washington
Government
 • TypeCouncil–manager
 • MayorLilija Stevens
Area
 • Total
8.56 sq mi (22.17 km2)
 • Land8.54 sq mi (22.13 km2)
 • Water0.012 sq mi (0.03 km2)
Elevation
758 ft (231 m)
Population
 (2020)
 • Total
16,071
 • Estimate 
(2024)
15,857
 • Density1,880.8/sq mi (726.17/km2)
Time zoneUTC−6 (CST)
 • Summer (DST)UTC−5 (CDT)
ZIP code
61571
Area code309
FIPS code17-79033
GNIS feature ID2397206
Websiteci.washington.il.us

Washington is a city in Tazewell County, Illinois, United States. Washington is on U.S. Route 24 and Illinois Route 8, northeast of East Peoria. The population was 16,071 at the 2020 census, a 48.2% percent increase over 2000. It is a suburb of Peoria and is part of the Peoria Metropolitan Statistical Area.