The population of Castelnuovo Berardenga is 8,847.
The population of Castelnuovo Belbo is 913.
Castelnuovo Bormida's population is 698.
The population of Castelnuovo Magra is 7,948.
The population of Castelnuovo Nigra is 424.
Castelnuovo Parano's population is 894.
Castelnuovo Rangone's population is 13,856.
Castelnuovo Bozzente's population is 810.
The population of Castelnuovo Calcea is 790.
Castelnuovo Scrivia's population is 5,508.
Castelnuovo Cilento's population is 2,251.
The population of Colleretto Castelnuovo is 362.
Castelnuovo del Garda's population is 12,469.