The municipality contains the hamlets La Mata de Armuña (83 people) Carbajosa de Armuña (52 people) and Mozodiel de Sanchíñigo (18 people).
The municipality includes three small villages: La Mata de Armuña, with 83 residents, Carbajosa de Armuña, with 52 residents, and Mozodiel de Sanchíñigo, with 18 residents.