Castelnuovo di Garfagnana's population is 6,117.
The population of Castelnuovo di Ceva is 127.
Castelnuovo di Conza's population is 975.
Castelnuovo di Farfa's population is 1,027.
Castelnuovo di Porto's population is 8,544.
The population of Castelnuovo di Val di Cecina is 2,460.
The area of Castelnuovo di Val di Cecina is 88.7 square kilometers.
The area of Castelnuovo di Ceva is 6,200,000.0 square meters.
The area of Castelnuovo di Garfagnana is 28.5 square kilometers.
The area of Castelnuovo di Conza is 14 square kilometers.
The area of Castelnuovo di Farfa is 9,000,000.0 square meters.
The area of Castelnuovo di Porto is 30.8 square kilometers.
The population of Castelnuovo Belbo is 913.