The Cumston Public Library serves about 4,107 residents of Kennebec County in the city of Monmouth, Maine. The library provides in-person and curbside services, maintains 18,755 volumes, and circulates 25,404 items per year. It is open on Mondays to Wednesdays and Fridays to Saturdays and is located in Cumston Hall, which also houses the Theater at Monmouth and provides a performance space for the Monmouth Community Players, Monmouth Academy, and the local school systems.