Borden-Carleton is a town in Prince County in the Canadian province of Prince Edward Island. It is situated on the south shore fronting on th…Borden-Carleton is a town in Prince County in the Canadian province of Prince Edward Island. It is situated on the south shore fronting on the Northumberland Strait. The town was originally incorporated as a community on April 12, 1995, through the amalgamation of the town of Borden and the community of Carleton. The town of Borden opted to demote its status to a community in light of a declining tax base with the pending completion of the Confederation Bridge and the closure of the Marine Atlantic ferry service. Borden-Carleton became a town on July 31, 2012.