Casalbuttano ed Uniti borders the following municipalities: Bordolano, Casalmorano, Castelverde, Castelvisconti, Corte de' Cortesi con Cignone, Olmeneta, Paderno Ponchielli, Pozzaglio ed Uniti.
Notable persons from San Mauro Castelverde include Santa Biondo, who immigrated to the United States as a child and became famous as an opera singer during the 1930s.