Campomarino borders the following municipalities: Chieuti, Guglionesi, Portocannone, San Martino in Pensilis, Termoli.
Between Monte Antico and Monte Capraro was a Pagus Collis Nisii or Collenisyus ("Hill of Bacchus") where the escaped from Usconium were sheltered after its destruction by the Goths.
Montecilfone borders the following municipalities: Guglionesi, Montenero di Bisaccia, Palata.
Montenero di Bisaccia borders the following municipalities: Cupello, Guglionesi, Lentella, Mafalda, Montecilfone, Palata, Petacciato, San Felice del Molise, San Salvo, Tavenna.
San Giacomo degli Schiavoni borders the following municipalities: Guglionesi, Termoli.
San Martino in Pensilis borders the following municipalities: Campomarino, Chieuti, Guglionesi, Larino, Portocannone, Rotello, Serracapriola, Ururi.