Hillerød is a Danish town with a population of 36,227 (1 January 2024) located in the centre of North Zealand approximately 30 km to the northwest of Copenhagen, Denmark. Hillerød is the administrative centre of Hillerød Municipality and also the administrative seat of Region Hovedstaden (Capital Region of Denmark), one of the five regions in Denmark. It is most known for its large Renaissance castle, Frederiksborg Castle, now home to the Museum of National History. Hillerød station is the terminus of one of the radials of the S-train network as well as several local railway lines. The town is surrounded by the former royal forests of Gribskov to the north and Store Dyrehave to the south.
