t Just in Roseland parish covers 2,650 acres (1,072 hectares) on the western side of the Roseland Peninsula, south of Truro, Cornwall.   

The whole parish is designated an Area of Outstanding Natural Beauty. It is a lansdcape of rolling farmland, bounded on the west by the waters of the Carrick Roads. The South West Coastal Path runs on this western side and following this path you see the village of St Just in Roseland on the ridgeline above St Just Pool, a Site of Special Scientific Interest. Here on the water's edge sits the 12th century St Just in Roseland Church. Grade I listed, this beautiful church is surrounded by subtropical planting described by Sir John Betjeman as "to many people the most beautiful churchyard on earth". The Coastal Path continues to St Mawes and Henry VIII's imposing coastal fortress, the Grade I listed St Mawes Castle.

St Mawes is the main settlement, followed by the village of St Just in Roseland and the hamlets of Trethewell and Commerrans.  The approximate population of the parish is 1000, with 35% the estimated percentage of second homes. Although a high proportion of residents are retired, St Mawes Primary and Nursery School is active in the community and maintained Good status in the recent Ofsted inspection in 2025.  The Parish Council is actively encouraging further development of affordable housing to keep a full mix of ages and families in the parish.