Gromadzyn
Village
Gromadzyn
Coordinates: 52°40′N 20°29′E / 52.667°N 20.483°E / 52.667; 20.483
Country	Poland
Voivodeship	Masovian
County	Płońsk
Gmina	Sochocin

Gromadzyn [ɡrɔˈmad͡zɨn] is a village in the administrative district of Gmina Sochocin, within Płońsk County, Masovian Voivodeship, in east-central Poland.^[1] It lies approximately 3 kilometres (2 mi) south-east of Sochocin, 8 km (5 mi) north-east of Płońsk, and 62 km (39 mi) north-west of Warsaw.