The village of St Mawgan is located within the county of Cornwall.
The Parish Church (a Grade I listed building) is called Mawgan: St Mawgan and serves the parish of Mawgan and the benefice of St Mawgan w St Ervan and St Eval and belongs to the diocese of Truro.
St Mawgan is situated in the South West (England) region of the UK and is governed by Cornwall, council.
The village of St Mawgan is in the Cornwall and Isles of Scilly region of Cornwall and Isles of Scilly within South West (England).