St Martin's is one of the five inhabited islands in the Isles of Scilly, located off the southwestern tip of Cornwall. The ward covers the entire island, which is known for its quiet, rural character and small population. The landscape features sandy beaches, rocky outcrops, and low-lying heathland, with farming and tourism as the main economic activities. The island has a single primary school and a handful of businesses, including a post office and a few guesthouses.
The community is tight-knit, with residents relying on boat services to travel between islands and the mainland. St Martin's is also home to the highest point in the Isles of Scilly, Telegraph Hill, offering panoramic views. The island has no cars, with most transport done on foot or by bicycle. Its isolation and natural environment make it a destination for those seeking tranquility and outdoor activities like walking and birdwatching.
On average St Martin's has moderate deprivation and very low crime levels, with around 31 crimes per 1,000 residents per year. Approximately 3.7% of homes in this area are social housing provided by a local council or housing association. The average income of residents in St Martin's is £50,200 per year.