The region of Lombardy is divided in 11 administrative provinces, 1 metropolitan city and 1,530 communes.
Reference 1: Area (km²), Population and Density (inh./km²).
Reference 2: Province of Bergamo, Province of Brescia, Province of Como, Province of Cremona, Province of Lecco, Province of Lodi, Province of Mantua, Metropolitan City of Milan, Province of Monza and Brianza, Province of Pavia, Province of Sondrio and Province of Varese.
Source: http://en.wikipedia.org/wiki/Lombardy
Reference 2: Province of Bergamo, Province of Brescia, Province of Como, Province of Cremona, Province of Lecco, Province of Lodi, Province of Mantua, Metropolitan City of Milan, Province of Monza and Brianza, Province of Pavia, Province of Sondrio and Province of Varese.
Source: http://en.wikipedia.org/wiki/Lombardy