The library, located at 7 Main Street, serves the town by providing a wide variety of materials, services, and events.

Construction of the building, and a significant portion of the library's early collection, were made possible through grants and gifts from Hubbardston native Jonas G. Clark, founder of Worcester's Clark University.

It is the most distinctive and architecturally elaborate building in the village, two stories in height, built out of red brick, with granite and white wooden trim, and a slate roof.

The center bay of the front facade projects, and is capped by a steeply pitched multicolor slate roof; this was originally crowned with iron cresting, which has been removed.

A gable projects below the main tower roof, above a stone panel in which the name of the building's donor and year of construction are carved.