Horsham District is made up of 3 neighbourhoods representing the unparished parts of Horsham (Denne, Forest and Trafalgar) and the following parishes:-
Amberley, Ashington, Ashurst, Billingshurst, Bramber, Broadbridge Heath, Coldwaltham, Colgate, Cowfold, Henfield, Itchingfield, Lower Beeding, North Horsham, Nuthurst, Parham, Pulborough, Rudgwick, Rusper, Shermanbury, Shipley, Slinfold, Southwater, Steyning, Storrington & Sullington, Thakeham, Upper Beeding, Warnham, Washington, West Chiltington, West Grinstead, Wiston, and Woodmancote. The town of Horsham is its administrative centre.