Plat is located in the municipality Župa Dubrovačka, in Dubrovnik-Neretva County at an elevation of 10 meters above sea level and it covers the area of 1.01 km² (0.39 sq. miles). According to the 2011 census report, there were 307 inhabitants. It is predominantly populated by Croats (97%), but also. Nearby places: Soline, Zavrelje, Mlini, Srebreno, Cavtat, Brašina, Kupari, Petrača, Jasenice and Zvekovica.