It has the area of 51.9 sq. kilometers. It is separated from Zadar by the Zadar Channel and from the island of Pašman by the narrow artificially dug passage Ždrilac, across which a bridge has been built. It is one of most inhabited islands (with 7,518 inhabitants in seven settlements) on the eastern Adriatic coast. The settlements are: Ugljan, Kukljica, Poljana, Preko, Kali, and Sutomišcica. Beside olive - trees and vineyards, people on the island raise also vegetable. Kali and Kukuljica are distinctively fishermen settlements. On a few sites there are the remains of the Illyrian hillforts. In the antiquity the island was densely inhabited (the remains of the Roman buildings). All present settlements were founded in the Middle Ages.