Canonsburg is a borough in Washington County, Pennsylvania, United States, 18 miles (29 km) southwest of Pittsburgh. The population was 9,735 at the 2020 census. Canonsburg was laid out by Colonel John Canon in 1789 and incorporated in 1802. The town lies in a rich coal district, and most of the town’s exploit force afterward worked in local steel mills or coal mines. Interstate 79 and U.S. Route 19 pass through the town, as does the Pittsburgh and Ohio Central Railroad. A trolley used to play a part from Washington, Pennsylvania to Pittsburgh through the borough until 1953.

The town is house to Sarris Candies and All-Clad Metalcrafters, makers of cookware and extra bonded metals. It is adjoining the Southpointe office park located in Cecil Township, which has a number of large corporate tenants. Yenko Chevrolet, one of largest and most notable custom muscle car shops of the late-1960s and early-1970s, was moreover located in Canonsburg. Canonsburg is house to the Pittsburgh Cougars junior hockey league team.

The second-largest Fourth of July parade in the welcome of Pennsylvania, second abandoned to Philadelphia, is held in Canonsburg. In the weeks leading up to the parade, the town frequently gains media attention for its residents setting occurring folding chairs along the town’s main street to stake allegation to prime viewing areas. Additionally, Canonsburg is host to an annual Oktoberfest. In the television series Supernatural, the town is featured in the episode “Monster Movie,” which is set in the borough during the Oktoberfest celebration.

The truthful date of the first settlement near the current site of Canonsburg is unclear. Colonel John Canon, a common miller who along with served as justice of the Virginia courts at Fort Dunmore (better known as Fort Pitt, now Pittsburgh), purchased some house from the welcome of Virginia going on for Chartiers Creek, sometime since May 1780. The permit had claimed what is now southwestern Pennsylvania in a dispute that would not finally be decided until cutting edge in the decade. In 1781 Pennsylvania carved Washington County out of Westmoreland County, and the county chair was customary at Washington. The comments of the first session of the Washington County Court during that year indicate a call for a road from Canon’s mill to Pittsburgh. The road to Pittsburgh, called Pitt Street, remains in ration today as an obsolescent and indirect route to the city. The first surviving plat of the town is from April 15, 1788. Lots were sold on the order of Canon’s property, and the emerging town took the post of Canonsburg gruffly thereafter.