Cissna Park is a village in Pigeon Grove Township, Iroquois County, Illinois, United States. The population was 817 at the 2020 census. Cissna Park is located in southern Iroquois County at 40°33′53″N 87°53′38″W / 40.56472°N 87.89389°W. Illinois Route 49 passes through the village, leading north 16 miles to Crescent City and south 7 miles to Rankin.