Nowy Dwór Mazowiecki, frequently referred to as Nowy Dwór, is a town situated in east-central Poland within the Masovian Voivodeship. It serves as the capital of Nowy Dwór County and is located in the northern section of the Warsaw metropolitan area.
As of 2021, the town has a population of approximately 28,500 inhabitants. It functions as a significant local administrative center within its region.