Campbell's Corners, Ontario, is the name given to a small settlement located close to the community of Hyndman. The community was originally called Campbell's Mills, as the settlement was formed around a mill established by a Hector Campbell, whose family was one of the first to settle the area in the early 1800s. Campbell's Corners was most prosperous during the mid-to-late 19th century when pioneer industries like mills could thrive; during this time, the mill attracted settlement and immigration, and an agricultural community grew around the milling industry.