Olgiate Molgora (Brianzöö: Ulgiàa) is a comune (municipality) in the Province of Lecco in the Italian region Lombardy, located about 35 km northeast of Milan and about 17 km of Lecco. As of January 2022, it has a population of 6 361 and an area of 7.2 km2. The municipality of Olgiate Molgora contains the frazioni (subdivisions, mainly villages and hamlets) Olgiate Vecchio, Buttero, Mondonico, Porchera, S.Zeno, Beolco, Monticello, Pianezzo, Monastirolo, Canova, Regondino, and Olcellera. Olgiate Molgora borders the following municipalities: Airuno, Brivio, Calco, Colle Brianza, Merate, Montevecchia, Rovagnate, Santa Maria Hoè. It is served by Olgiate-Calco-Brivio railway station, which is a part of the Milan S Lines (S8), the commuter rail system serving the metropolitan area of Milan.

Demographic evolution