Luke Poljanske is located in the municipality Zagorska Sela, in Krapina-Zagorje County at an elevation of 200 meters above sea level and it covers the area of 0.75 km² (0.29 sq. miles). According to the 2011 census report, there were 66 inhabitants. It is predominantly populated by Croats (93%), but also Slovenes (7%). Nearby places: Stara Ves Košnička, Harina Zlaka, Bojačno, Košnica, Jazbina, Bratkovec, Poljana Sutlanska, Hum Košnički, Gora Košnička and Ivanić Košnički.