Ogle County, Illinois

Ogle County, Illinois
Location within the U.S. state of Illinois
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 
(2024)
51,345
 • Density68.2/sq mi (26.3/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.