St Just in Penwith

St Just
Market Square
from the air
St Just
Location within Cornwall
Interactive map of St Just
Population4,695 (Parish, 2021)
1,918 (Built up area, 2021)
OS grid referenceSW371315
Civil parish
  • St Just (town council is called "St Just-in-Penwith Town Council")
Unitary authority
Ceremonial county
Region
CountryEngland
Sovereign stateUnited Kingdom
Post townPENZANCE
Postcode districtTR19
Dialling code01736
PoliceDevon and Cornwall
FireCornwall
AmbulanceSouth Western
UK Parliament

St Just (Cornish: Lannust), also known as St Just in Penwith, is a town and civil parish in Cornwall, England, United Kingdom. It lies along the B3306 road which connects St Ives to the A30 road. The parish encompasses the town of St Just and the nearby settlements of Trewellard, Pendeen and Kelynack: it is bounded by the parishes of Morvah to the north-east, Sancreed and Madron to the east, St Buryan and Sennen to the south and by the sea in the west. The parish consists of 7,622 acres (3,085 ha) of land, 12 acres (4.9 ha) of water and 117 acres (47.3 ha) of foreshore. The town of St Just is the most westerly town in mainland Britain and is situated approximately 8 miles (13 km) west of Penzance along the A3071. At the 2021 census the population of the parish was 4,695 and the population of the built up area was 1,918.

St Just lies within the Cornwall Area of Outstanding Natural Beauty (AONB). St Just is one of only two towns included within the Cornwall AONB.