Wareham is an historic market town and, under the name Wareham Town, a civil parish, in the [[wikipedia:English county of Dorset. The town is situated on the River Frome eight miles (13 km) southwest of Poole.
The civil parish of Wareham Town encompasses the walled town of Wareham, situated on the land between the rivers Frome and Piddle, together with the area of Northport to the north of the River Piddle, and a relatively small amount of the surrounding rural area. The parish has an area of 6.52 square kilometres (2.52 square miles).
The sister civil parish of Wareham St. Martin covers much of the rural area to the north of Wareham, including the village of Sandford. Taken together, the two Wareham parishes have an area of 36.18 square kilometres (13.97 square miles), with a 2001 population of 8,417 in 3,788 dwellings.