Gornja Lomnica is located in the City of Velika Gorica, in Zagreb County at an elevation of 112 meters above sea level and it covers the area of 2.22 km² (0.86 sq. miles). According to the 2011 census report, there were 582 inhabitants. It is predominantly populated by Croats (98%), but also. Nearby places: Hrašće Turopoljsko, Donja Lomnica, Odra, Lukavec, Mala Mlaka, Veliko Polje, Gradići, Velika Mlaka, Petrovina Turopoljska and Buzin.