St Agnes is in the Hundred and Deanery of Pydar. It is bounded on the North by the Bristol Channel and Perranzabuloe, on the East by Kenwyn and Kea, on the South by Gwennap and Redruth, and on the West by Illogan. The town is just inland from the North coast and lies to the North of Redruth; it is now in the Carrick district and is situated near the North Coast to the North West of Truro. Villages in the parish include the Churchtown, Trevaunance Cove, Towan Cross, Mithian and Mingoose. The town of Perranporth is to the North East of the parish. Blackwater is a village 3 miles South-East, in the ecclesiastical parish of Mithian which is on the road between Redruth and St Columb. The new parish of Mount Hawke, was created from part of parish 1847; it is located in the West of the older St Agnes parish.