Mala Gradusa is located in the municipality Sunja, in Sisak-Moslavina County at an elevation of 109 meters above sea level and it covers the area of 3.37 km² (1.30 sq. miles). According to the 2011 census report, there were 23 inhabitants. It is largely populated by Serbs (85%), but also Croats (15%). Nearby places: Kladari, Sjeverovac, Mala Paukova, Vukoševac, Svinica, Velika Gradusa, Drljača, Brđani Kosa, Staro Selo and Brđani Cesta.