The CDP is in the western part of Charlestown, on the east side of the Connecticut River, which forms the Vermont state line.
The border then turns south along a power line clearing that runs east of the village area, following it to Dickerson Brook and then southwest to Almar Street.
[3] New Hampshire Route 12 is Charlestown's Main Street, leading north 10 miles (16 km) to Claremont and south 7 miles (11 km) to North Walpole, across the Connecticut from Bellows Falls, Vermont.
30.6% of all households were made up of individuals, and 11.1% were someone living alone who was 65 years of age or older.
Male full-time workers had a median income of $37,689 versus $36,738 for females.