Vlaardingen is a large town and municipality in South Holland in the Netherlands. It is located on the north bank of the Nieuwe Maas river at the confluence with the Oude Maas. The municipality administers an area of 26.69 km2 (10.31 sq mi), of which 23.57 km2 (9.10 sq mi) is land, with 73,924 residents in 2021.