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 | |
| Country | United States | 
| State | Illinois | 
| Founded | January 16, 1836 | 
| Named after | Joseph Ogle | 
| Seat | Oregon | 
| Largest city | Rochelle | 
| Area | |
|  • Total | 763 sq mi (1,980 km2) | 
| • Land | 759 sq mi (1,970 km2) | 
| • Water | 4.4 sq mi (11 km2) 0.6% | 
| Population  (2020) | |
|  • Total | 51,788 | 
|  • Estimate  (2023) | 51,265 | 
| • Density | 68/sq mi (26/km2) | 
| Time zone | UTC−6 (Central) | 
| • Summer (DST) | UTC−5 (CDT) | 
| Congressional district | 16th | 
| Website | www | 
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.