De volgenden gemeenten grenzen aan Cozzo: Candia Lemollina, Castelnovetto, Langosco, Rosasco, Sant'Angelo Lomellina, Valle Lomellina, Zeme. ###>Cozzo borders the following municipalities: Candia Lomellina, Castelnovetto, Langosco, Rosasco, Sant'Angelo Lomellina, Valle Lomellina, Zeme.