According to Natural England, who have designated the Dorset Heaths as National Character Area 135, the heathlands cover an area of 61,662 hectares, whose boundary runs from Bockhampton and Warmwell in the west via Wimborne Minster to Fordingbridge in the far northeast. It then turns southwards to Hengistbury Head, before following the coastline to Studland and Brownsea Island then finally heading westwards - north of South Purbeck (with the Purbeck Hills) and the Weymouth Lowlands - to the Warmwell area.