About This Place
Knox is a borough in Clarion County, Pennsylvania, United States. The population was 1,176 at the 2000 census.
Knox is located at 41°14′7″N 79°32′10″W / 41.23528°N 79.53611°W / 41.23528; -79.53611 (41.235317, -79.536123).
According to the United States Census Bureau, the borough has a total area of 0.6 square miles (1.5 km²), all of it land.