The village is on the west bank of a headstream of the River Kennet and close to the A4361 road, formerly the A361, which links Devizes and Avebury with Wroughton and Swindon.

The parish of Berwick Bassett is part of Calne Hundred and comprises about 1400 acres about 3 mi (5 km) north of Avebury.

It has a slender rectangular shape, oriented east and west, and is crossed from north to south by the upper part of the River Kennet, which flows only in the winter months.

[2] There are a number of ancient sites in the parish; these include flint tools, Romano-British pottery fragments, cropmarks, enclosures, a round barrow and a medieval farmstead.

[3] Berwick Bassett is in the area of Wiltshire Council unitary authority, which is responsible for all significant local government functions.