Elmer is a coastal village in the Arun district of West Sussex. It is part of the built-up area around Bognor Regis and there is a small local shopping area including a launderette, Indian restaurant and conveinience stores, along with two pubs The Cabin and The Elmer.
The area also includes the hamlet of Ancton, centred on Ancton Farm, which is considerably older than Elmer, which has only been developed within the last 50 years.
The whole area of Elmer used to be farmland until the housing drive of the postwar years when the Elmer Sands Estate was constructed. Much of the original housing in the Elmer Sands estate consisted of old railway carriages; over the years these are being replaced by modern housing.