Grbavac is located in the municipality Župa Dubrovačka, in Dubrovnik-Neretva County at an elevation of 33 meters above sea level and it covers the area of 2.34 km² (0.90 sq. miles). According to the 2011 census report, there were 100 inhabitants. It is entirely populated by Croats. Nearby places: Martinovići, Makoše, Donji Brgat, Čelopeci, Buići, Mandaljena, Gornji Brgat, Petrača, Šumet and Knežica.