| Ogle County Illinois Cities/Towns -
Adeline, Byron, Creston, Davis Junction, Forreston, Hillcrest, Leaf River, Monroe Center, Mount Morris, Oregon (County Seat), Polo, Rochelle, Stillman Valley, White Rock, Woosung |
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Your Ad Here Ogle County is a county located in the U.S. state of Illinois. As of 2000, the population was 51,032. Its county seat is Oregon. History Ogle County was formed in 1836. It was named in honor of Captain Joseph Ogle, a veteran of the Revolutionary War who came to Illinois in 1785. ![]() |