Sydmonton is a village in Hampshire, England.
It is situated within the RG20 postcode district, which is within the Newbury post town.
The full list of postcode districts within the Newbury post town is as follows:
The Newbury post town is within the Reading postcode area.
Administrative Ward: Burghclere, Highclere and St Mary Bourne
Administrative District: Basingstoke and Deane
Administrative County: Hampshire
Country: England
UK Parliament: North West Hampshire
NHS Local Health Authority: South Central
NHS Region: Southern