Constantine is situated in the Deanery and Hundred of Kerrier. In 1869, it was bounded on the East by Budock and Mawnan, on the South by Helford Creek, which separates it from Manaccan, St Martins and Mawgan-in-Meneage, and on the West and North by Wendron, Stithians and Mabe. The village is mentioned in the Domesday Book of 1086 as Saint Constantin. Constantine Churchtown is a well-built village in the midst of open country. Villages and hamlets in the parish include: Gweek, Seworgan, Brill, Port Navas, Budock Vean and Helford Passage.