The population of Castelnuovo Magra is 7,948.
Castelnuovo Bozzente's population is 810.
The population of Castelnuovo Nigra is 424.
The population of Colleretto Castelnuovo is 362.
Castelnuovo Bormida's population is 698.
The population of Castelnuovo Belbo is 913.
The population of Castelnuovo Calcea is 790.
Castelnuovo Cilento's population is 2,251.
Castelnuovo Rangone's population is 13,856.
The population of Castelnuovo Berardenga is 8,847.
Castelnuovo Scrivia's population is 5,508.
Castelnuovo Parano's population is 894.
Castelnuovo Bocca d'Adda's population is 1,700.