Invorio borders the following municipalities: Ameno, Arona, Bolzano Novarese, Borgomanero, Briga Novarese, Colazza, Gattico-Veruno, Gozzano, Meina, and Paruzzaro.
Invorio's boundaries are defined by the municipalities of Ameno, Arona, Bolzano Novarese, Borgomanero, Briga Novarese, Colazza, Gattico-Veruno, Gozzano, Meina, and Paruzzaro.