The village of Postira is located on the northern coast of the island of Brac, eight kilometers from the island's port of Supetar. It is connected with nearby villages Pucišca, Splitska and Dol as well as with the city of Supetar with paved road, where local bus lines operate.

The municipality has a total population of 1,559 in two settlements.

In the 2011 census, 98.5% of the population were Croats.

The main activities are fishing, agriculture, and tourism.

Home products are olive oil and local wine. Sardina d.d. company can fish producer from the high quality Adriatic pilchard Sardina pilchardus.

Next to the harbour are the beaches of Prvija and Zastivanje. Beach Mala Lozna is on the east end of Postira village and far more to the east, is the very attractive sand beach, Lovrecina. Near Lovrecina beach are the ruins of a large early Christian basilica from the 5th-6th century.

There are hotels Pastura, Vrilo and Lipa in the village and many private apartments. Near the port is supermarket Studenac, bakery, bank, post and market. There are also several restaurants and tourist information center.