The parish covers an area of 6.78 km2 (2.62 sq mi) and had a population of 341 in 141 households at the 2001 census,[2] with the population increasing to 365 at the 2011 Census.[3]
Seething Airfield, formerly RAF Seething, is to the south of the village. The area of the airfield is on the parish boundary, with most of the area of the current operation in the parish of Mundham. Seething Observatory, which is located on the airfield site, is within Mundham.[5]