It is located in an architecturally distinguished Colonial Revival building at 34 Mount Desert Street in the town's main village.

The building was built in 1910-11, donated to the community by Mrs. Morris K. Jesup in memory of her late husband, both of them longtime summer residents of the area, and was listed on the National Register of Historic Places in 1991 for its architecture.

[1] The Jesup Library is set on the south side of Mount Desert Street (Maine State Route 3), about one block west of Bar Harbor's village green.

Its front facade is five bays wide, with a centered entrance recessed in a limestone arch flanked by paired pilasters, and a medallion above the doorway depicting an open book.

The flanking bays have sash windows topped by rounded limestone panels with bullseye insets.