Monastero Bormida borders the following municipalities: Bistagno, Bubbio, Cassinasco, Denice, Loazzolo, Ponti, Roccaverano, and Sessame.
The municipality of Monastero Bormida shares its borders with the following towns: Bistagno, Bubbio, Cassinasco, Denice, Loazzolo, Ponti, Roccaverano, and Sessame.