Princeton is a town in Worcester County, Massachusetts, United States. It is bordered on the east by Sterling and Leominster, on the north by Westminster, on the northwest by Hubbardston, on the southwest by Rutland, and on the southeast by Holden. The preeminent landmark within Princeton is Mount Wachusett, which straddles the line between Princeton and Westminster but the entrance to which is within Princeton. According to tradition, in 1675, Mary Rowlandson was ransomed upon Redemption Rock, now within the town of Princeton, by King Philip. The population was 3,413 at the 2010 census.