Kent is an unincorporated community in Stephenson County, Illinois. Kent is home to Forreston State Bank, Kent Feed Mill, St. Paul's Lutheran Church, Kent United Methodist Church, Kent Fire Depart…Kent is an unincorporated community in Stephenson County, Illinois. Kent is home to Forreston State Bank, Kent Feed Mill, St. Paul's Lutheran Church, Kent United Methodist Church, Kent Fire Department and the Kent U.S. Post Office.