It is located on Concord Avenue near Belmont Center.
[3] Originally, it was housed in the Belmont Town Hall, designed by architects Hartwell and Richardson and completed in 1881.
In 1902, a new facility was donated by Henry Oliver Underwood and opened in 1902.
In 1965, the Belmont Memorial Library on Concord Avenue was opened.
In 2024, the Belmont Memorial Library was torn down, with a planned opening of a new building in Fall 2025.