Eaglehawk Neck is a narrow isthmus connecting the Tasman Peninsula to mainland Tasmania. Locally known as the Neck, the isthmus itself is around 400 metres long and under 30 metres wide at its narrowest point. It forms a natural gateway to the peninsula that was utilised by the British in 1830s, when a line of dogs was chained to posts across the neck to warn of any convicts attempting to escape the prison at Port Arthur. The area was heavily patrolled by soldiers, and the guards' quarters still remains as a museum. Many attempts were made by prisoners to escape via the neck, including those of Martin Cash.

Eaglehawk Neck has 9 active real estate agents working in the area, they have sold a total of 29 properties in the last 12 months.