Apart from its southern boundary on the Ohio River, New Boston is entirely surrounded by the city of Portsmouth.

New Boston was platted on February 17, 1891, by James Skelton, A.T. Holcomb, and M.

[4] The village was named after Boston, Massachusetts, the native home of a share of the first settlers.

[6] New Boston is entirely surrounding on the west, north, and east by the City of Portsmouth and to the south by the Ohio River.

There were 1,173 housing units at an average density of 1,056.8 per square mile (408.0/km2).

44.9% of all households were made up of individuals, and 20.9% had someone living alone who was 65 years of age or older.

44.1% of all households were made up of individuals, and 24.3% had someone living alone who was 65 years of age or older.