Willow Canyon is a census-designated place in Pima County, in the U.S. state of Arizona. The population was "S" (Seasonal) at the 2010 census. Geography The community is an area of cabins within the Coronado National Forest, north of Tucson on the Catalina Highway. According to the U.S. Census Bureau, the community has an area of , all land. Demographics References Census-designated places in Pima County, Arizona Census-designated places in Arizona