About This Place
Hornbrook is a census-designated place (CDP) in Siskiyou County, California, United States. The population was 248 at the 2010 census, down from 286 at the 2000 census.
Hornbrook is located at 41°54′35″N 122°33′27″W / 41.90972°N 122.5575°W / 41.90972; -122.5575 (41.909594, -122.557628).
According to the United States Census Bureau, the CDP has a total area of 1.2 square miles (3.0 km²), 99.04% of it land and 0.96% of it water.