Mount Carroll, Illinois, is a small city located in Carroll County. It was founded in the 1830s and is known for its rich history and charming small-town atmosphere. The city is situated along the Nashua River, providing scenic views and outdoor recreational opportunities for residents and visitors alike. The population of Mount Carroll is around 1,600 people, making it a close-knit community. The city features several historic buildings, including the Carroll County Courthouse, which showcases beautiful architecture. Mount Carroll also hosts various local events and festivals throughout the year, fostering community spirit and engagement.