Kane County, Illinois

Kane County
County
Location within the U.S. state of Illinois
Illinois's location within the U.S.
Coordinates: 41°57′N 88°26′W / 41.95°N 88.43°W / 41.95; -88.43
Country United States
State Illinois
FoundedJanuary 16, 1836
Named afterElias Kane
SeatGeneva
Largest cityAurora
Area
  Total
524 sq mi (1,360 km2)
  Land520 sq mi (1,300 km2)
  Water4.1 sq mi (11 km2)  0.8%
Population
 (2020)
  Total
516,522
  Estimate 
(2023)
514,982
  Density990/sq mi (380/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional districts8th, 11th, 14th
Websitecountyofkane.org

Kane County is a county in the U.S. state of Illinois. According to the 2020 census, it has a population of 516,522, making it the fifth-most populous county in Illinois. Its county seat is Geneva, and its largest city is Aurora. Kane County is one of the collar counties of the metropolitan statistical area designated "ChicagoNapervilleElgin, IL–INWI" by the US census.