Ogle County, Illinois

Ogle County
Location within the U.S. state of Illinois
Illinois's location within the U.S.
Coordinates: 42°02′N 89°19′W / 42.04°N 89.32°W / 42.04; -89.32
Country United States
State Illinois
FoundedJanuary 16, 1836
Named afterJoseph Ogle
SeatOregon
Largest cityRochelle
Area
  Total
763 sq mi (1,980 km2)
  Land759 sq mi (1,970 km2)
  Water4.4 sq mi (11 km2)  0.6%
Population
 (2020)
  Total
51,788
  Estimate 
(2023)
51,265
  Density68/sq mi (26/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district16th
Websitewww.oglecounty.org

Ogle County is a county in the northern part of the U.S. state of Illinois. According to the 2020 United States census, it had a population of 51,788. Its county seat is Oregon, and its largest city is Rochelle. Ogle County comprises Rochelle, IL Micropolitan Statistical Area, which is also included in the Rockford-Freeport-Rochelle, IL Combined Statistical Area.