The Friends Creek Conservation Area is a 616-acre (2.5 km2) natural area in the U.S. state of Illinois, located in Friends Creek Township near Cisco in northeastern Macon County. The conservation area, located 18 miles (29 km) north of Decatur, preserves creek woodlands and has regrown some tallgrass prairie and oak–hickory forest. It serves the people of the Decatur metropolitan area.