Versa (Po)

Portalbera is a comune (municipality) in the Province of Pavia in the Italian region Lombardy, located about 40 km southeast of Milan and about 15 km southeast of Pavia. As of 31 December 2004, it had a population of 1,434 and an area of 4.7 km².The municipality of Portalbera contains the frazione (subdivision) San Pietro. Portalbera borders the following municipalities: Arena Po, Spessa, Stradella.

Spessa is a comune (municipality) in the Province of Pavia in the Italian region Lombardy, which is located about 40 km southeast of Milan and about 15 km southeast of Pavia. As of 31 December 2004, it had a population of 545 and an area of 12.2 km2.Spessa borders the following municipalities: Arena Po, Belgioioso, Costa de' Nobili, Portalbera, San Cipriano Po, San Zenone al Po, Stradella, Torre de' Negri.

Bosnasco is a comune (municipality) in the Province of Pavia in the Italian region Lombardy, located about 45 km southeast of Milan and about 20 km southeast of Pavia. As of 31 December 2004, it had a population of 616 and an area of 4.8 km².Bosnasco borders the following municipalities: Arena Po, Castel San Giovanni, Montù Beccaria, San Damiano al Colle, Zenevredo.

San Damiano al Colle is a comune (municipality) in the Province of Pavia in the Italian region Lombardy, located about 45 km southeast of Milan and about 20 km southeast of Pavia. As of 31 December 2004, it had a population of 767 and an area of 6.4 km².San Damiano al Colle borders the following municipalities: Bosnasco, Castel San Giovanni, Montù Beccaria, Rovescala.

San Zenone al Po is a comune in the province of Pavia, Lombardy, Italy.

Arena Po (Lombard: Reina) is a comune (municipality) in the Province of Pavia in the Italian region of Lombardy, located about 45 km southeast of Milan and about 20 km southeast of Pavia. As of 31 December 2004, it had a population of 1,595 and an area of 22.3 km2.Arena Po borders the following municipalities: Bosnasco, Castel San Giovanni, Pieve Porto Morone, Portalbera, San Zenone al Po, Spessa, Stradella, Zenevredo, and Zerbo. Composer Giovanni Quirici was born in the comune.

Stradella (Lombard: Stradéla) is a town and comune (municipality) of the Oltrepò Pavese in the Province of Pavia in the northern Italian region of Lombardy. It is situated in the Padan Plain, about 5 km (3 mi) south of the river Po and has a population of 10,922.

Torre de' Negri is a comune (municipality) in the Province of Pavia in the Italian region Lombardy, located about 40 km southeast of Milan and about 15 km east of Pavia. Torre de' Negri borders the following municipalities: Belgioioso, Corteolona e Genzone, Costa de' Nobili, Spessa.

Costa de' Nobili is a comune (municipality) in the Province of Pavia in the Italian region Lombardy, located about 40 km (25 mi) southeast of Milan and about 20 km (12 mi) southeast of Pavia. Costa de' Nobili borders the following municipalities: Corteolona e Genzone, Pieve Porto Morone, San Zenone al Po, Santa Cristina e Bissone, Spessa, Torre de' Negri, Zerbo.

Corteolona is a frazione of the comune (municipality) of Corteolona e Genzone in the Province of Pavia in the Italian region Lombardy, located about 40 km southeast of Milan and about 15 km east of Pavia. It was a separate comune until 2016.

Corteolona e Genzone is a comune (municipality) in the Province of Pavia in the Italian region Lombardy. It was established on 1 January 2016 by the merger of the municipalities of Corteolona and Genzone.