Ridgefield is an unincorporated community in McHenry County, Illinois, United States. Ridgefield is 3 miles (4.8 km) northwest of Crystal Lake. Ridgefield hosts a small number of antique shops in a small crossroads business district. Ridgefield also has a large grain storage facility and a retail hardware store. Metra commuter trains pass through Ridgefield on their way to Chicago from Woodstock without stopping, though are currently shelved plans to build a station here.