Colzate (Bergamasque: Colgiàt) is a comune (municipality) in the Province of Bergamo in the Italian region of Lombardy, located about 70 km northeast of Milan and about 20 km northeast of Bergamo. As of 31 December 2004, it had a population of 1,638 and an area of 6.7 km2. The municipality of Colzate contains the frazioni (subdivisions, mainly villages and hamlets) Bondo di Colzate and Piani di Rezzo. Colzate borders the following municipalities: Casnigo, Gorno, Oneta, Vertova.

Demographic evolution