  canonsburg is a borough in washington county, pennsylvania,  southwest of pittsburgh. canonsburg was laid out by colonel john canon in 1789 and incorporated in 1802. the borough is in a rich coal district, and most of the town's work force once worked in local steel mills or coal mines. canonsburg's population in 1910, including south ca
Boroughs_in_Pennsylvania Boroughs_in_Washington_County,_Pennsylvania Canonsburg,_Pennsylvania Pittsburgh_metropolitan_area Populated_places_established_in_1791