Strmec is located in the municipality Preseka, in Zagreb County at an elevation of 115 meters above sea level and it covers the area of 1.50 km² (0.58 sq. miles). According to the 2011 census report, there were 25 inhabitants. It is entirely populated by Croats. Nearby places: Preseka, Žabnjak, Kraljev Vrh, Krušljevec, Slatina, Kamenica, Donja Velika, Žunci, Gornjaki and Ledina.