Some of the cities, towns, and places in Stephenson County are Afolkey, Baileyville, Bolton, Buckeye, Buckhorn Corners, Buena Vista, Cedarville, Dakota, Damascus, Davis, Eleroy, Erin, Evarts, Florence, Freeport, German Valley, Harlem, Jefferson, Kellogg's Grove, Kent, Lake Summerset, Lancaster, Lena, Loran, McConnell, Oneco, Orangeville, Pearl City, Red Oak, Ridott, Rock City, Rock Grove, Rock Run, Scioto Mills, Silver Creek, Waddams, Waddams Grove, West Point, Willow Lake, Winneshiek, Winslow, Yellow Creek
Stephenson County is a county located in the U.S. state of Illinois. According to the 2010 United States Census, it had a population of 47,711. Its county seat is Freeport.Stephenson County is included in the Freeport, IL Micropolitan Statistical Area, which is also included in the Rockford-Freeport-Rochelle, IL Combined Statistical Area.