Koski Duże

Koski Duże is a village in the administrative district of Gmina Perlejewo, within Siemiatycze County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 6 km south-east of Perlejewo, 20 km north-west of Siemiatycze, and 75 km south-west of the regional capital Białystok.