Grębków is a village in Węgrów County, Masovian Voivodeship, in east-central Poland. It is the seat of the gmina (administrative district) called Gmina Grębków. It lies approximately south-west of Węgrów and east of Warsaw. The village has a population has a population of 433. References External links Jewish Community in Grębków on Virtual Shtetl Villages in Węgrów County