Northern Illinois is a region in the state of Illinois, known for its diverse landscapes, including rolling hills, forests, and rivers. The area is home to several cities, with Rockford and DeKalb being among the largest. Northern Illinois is also known for its agricultural production, particularly corn and soybeans, contributing significantly to the state's economy. The region features various recreational opportunities, including parks and lakes, making it popular for outdoor activities like hiking, fishing, and camping. Additionally, Northern Illinois is home to Northern Illinois University, which offers a range of academic programs and contributes to the local culture and economy.