The village of Barnham is located within the county of West Sussex.
The Parish Church (a Grade I listed building) is called Barnham: St Mary and serves the parish of Aldingbourne, Barnham & Eastergate and the benefice of Aldingbourne Barnham and Eastergate and belongs to the diocese of Chichester.
Barnham is situated in the South East (England) region of the UK and is governed by Arun, council.
The village of Barnham is in the West Sussex (South West) region of Surrey, East and West Sussex within South East (England).