| Description: | Ogle County, located in northern Illinois, covers an area of 759 square miles and had a 1998 population of 52,858, according to estimates by the U.S. Department of Commerce's Bureau of the Census. Using these figures, Ogle County was the 17th largest county in Illinois geographically, but 27th largest in terms of population. Combining these two measures, Ogle County had the 37th highest population density per square mile among Illinois 102 counties. | |