The parish includes the settlements of Great Pennys, Trimms Green, Sacombs Ash, Allens Green, Chandlers, Carters, Rook End, Hoskins and Sayes Park.[3] The village contains a Church of Englandprimary school[4] and a late 19th-century church, St James, with a marble reredos[3] and a Father Willisorgan.[5] A moated site is all that remains of the medieval residence of Mathams.[3] There is also a Georgian historical house called the Manor of Groves which is now a hotel.
High Wych was historically part of the parish of Sawbridgeworth. It became a separate ecclesiastical parish in 1862.[6] High Wych remained part of the civil parish of Sawbridgeworth until 1 April 1901 when it became a separate civil parish.[7]