Deviock is a coastal civil parish in south-east Cornwall, England, United Kingdom. It is situated approximately three miles (5 km) west of St Germans and straddles the valley of the River Seaton.[1] The parish includes the settlements of Hessenford, Seaton and Downderry and the population in the 2001 census was 1341, increasing to 1,420 at the 2011 census.[2] The parish occupies an area of 2,108 hectares (approx 5,000 acres)[citation needed].
The hamlets of Narkurs and Trelowia are also in the parish.[3]