Champaign County, Illinois

Champaign County
The Champaign County Courthouse in Urbana
Location within Illinois
Illinois' location within the United States
Coordinates: 40°6′59″N 88°14′36″W / 40.11639°N 88.24333°W / 40.11639; -88.24333
CountryUnited States
StateIllinois
RegionCentral Illinois
Metro areaChampaign–Urbana Metropolitan
IncorporatedFebruary 20, 1833
County seatUrbana
Largest cityChampaign
Area
  Total
998 sq mi (2,580 km2)
  Land996 sq mi (2,580 km2)
  Water2.1 sq mi (5 km2)
  Rank5th largest county in Illinois
Population
 (2020)
  Total
205,865
  Density210/sq mi (80/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (Central)
ZIP Code prefixes
60949, 61801, 61802, 61815, 61816, 61820-61822, 61840, 61843, 61845, 61847, 61849, 61851-61853, 61859, 61862-61864, 61866, 61871-61875, 61877, 61878, 61880
Area codes217/447
Congressional district2nd, 13th, 15th
Websiteco.champaign.il.us
Elected countywide officials
Champaign County, IL
Office Name Party
County Executive Steve Summers Democratic
Assessor Paula Bates Democratic
Auditor George P. Danos Democratic
County Board Chair Jennifer Locke Democratic
County Board Majority Jenny Lokshin Democratic
Circuit Clerk Susan W. McGrath Democratic
County Clerk & Recorder Aaron Ammons Democratic
Coroner Laurie Brauer Democratic
Sheriff Dustin Heuerman Democratic
State's Attorney Julia Rietz Democratic
Treasurer Byron Clark Democratic

Champaign County is a county in the U.S. state of Illinois. As of the 2020 Census, its population was 205,865, making it the 10th-most populous county in Illinois. Its county seat is Urbana.

Champaign County is part of the Champaign–Urbana metropolitan area. The twin cities of Urbana and Champaign are the only cities in the county, and they nearly surround the campus of the University of Illinois.