Sestrunj has only 48 inhabitants and three ports: Hrvatinj, Kablin and Triluke. The surface of the island is 15,41 square kilometres. In prehistoric times it was inhabited by the Illyrians. Valuable archaeological finds dating back to 150 BC have been found in stone grave mounds. The main sights are the Church of St. Peter and Paul from the 16th century and the Church of Our Lady of Health from 1602.
The majority of houses, the old centre, are located on an elevation two kilometres away from the sea, offering a magnificent view of almost the entire Zadar archipelago.
The remains of an Illyrian fort and stone mounds have been found on the island.
Once a year, usually at the end of July, there is a local festival, the Night of Sestrunska. On this night, locals and guests meet in the village square, chatting, dancing to live music, drinking and eating.