Longcot is a village and civil parish in the Vale of White Horse District. It was part of Berkshire until the 1974 boundary changes transferred it to Oxfordshire. The village is about 3 miles (5 km) south of Faringdon and about 2.5 miles (4 km) northeast of Shrivenham. The A420 road between Swindon and Oxford passes through the parish 1 mile (1.6 km) northwest of the village. The 2011 Census recorded the parish's population as 617