Charlestown is a suburb of the City of Lake Macquarie, New South Wales, Australia, and the largest town within the City. It is approximately 10 kilometres west-south-west of the central business district of Newcastle. Charlestown has the largest business centre within the Lake Macquarie city, with a greater turnover than that of the neighbouring Newcastle CBD.[citation needed] The suburb serves as the district's transport hub.

Charlestown has 81 active real estate agents working in the area, they have sold a total of 171 properties in the last 12 months.