Hinterland

The hinterland is the land or district behind a coast or the shoreline of a river. Specifically, by the doctrine of the hinterland, the word is applied to the inland region lying behind a port, claimed by the state that owns the coast. The area from which products are delivered to a port for shipping elsewhere is that port's hinterland. The term is also used to refer to the area around a city or town.

Read more about Hinterland:  Etymology and Usage