Deviock is a coastal civil parish in south-east Cornwall situated approximately three miles west of St Germans and straddles the valley of the River Seaton.
The parish history of the St Germans area is complex and has been subject to much change. Two ecclesiastical parishes (Hessenford and Tideford) were created in the 19th century. Deviock civil parish was created as recently as April 1997 from part of the former St Germans Parish; it also includes parts of St Martin-by-Looe and part of Morval.
There are three electoral wards with Councillors representing the villages of Downderry, Seaton and Hessenford. The hamlets of Narkurs and Trelowia are also in the parish.
The Parish Council meets on the second Thursday of the month (except August and December) at 7.30 pm to hear the public and to conduct essential business. The full Council also meets on the third Thursday of December in order to approve the budget for the following year. The Parish Council Planning Committee meets to hear planning applications on the fourth Thursday of the month (not December) at 6.30pm.
All parish meetings are held at the Zone, Downderry Methodist Church.