Kupari is located in the municipality Župa Dubrovačka, in Dubrovnik-Neretva County at an elevation of 3 meters above sea level and it covers the area of 1.44 km² (0.56 sq. miles). According to the 2011 census report, there were 825 inhabitants. It is predominantly populated by Croats (93%), but also Bosniaks (3%). Nearby places: Brašina, Srebreno, Čibača, Petrača, Mandaljena, Mlini, Čelopeci, Zavrelje, Buići and Soline.