The communal seat, Piazza, is located in the lower valley of the Prino stream. The other main centers are Isolalunga, Costa Carnara, Bellissimi and Lecchiore. Dolcedo borders the following municipalities:Badalucco,Civezza,Imperia,Montalto Ligure,Pietrabruna,Prelà,Taggia, andVasia.
The boroughs of Dolcedo appeared in the early Middle Ages, populated by refugees from the Ligurian coast. Later it was a fief of the Clavesana family. In the 12th century cultivation of olive became a mainstay of the area. In 1228 the Clavesana ceded their lands to the commune ofGenoa.