Canby is a census-designated place in Modoc County, California. It is located 17 miles west of Alturas, at an elevation of 4,314 feet. Its population is 183 as of the 2020 census, down from 315 from the 2010 census. The ZIP Code is 96015. The community is inside area code 530. Canby is the location of the main branch of the I'SOT religious community, and is known for the I'SOT's nativity scenes prominently displayed along the town's main street, California State Route 299.