Near Skopelos, it consists of the main town (also called Skiathos) and the communities of Koukounaries, Kanapitsa, Vromolimnos and Troulos. Skiathos is the westernmost island in the Northern Sporades group of islands. The mainland of Greece and Magnesia are to the west. The name of the island dates back to ancient times.
The island of Skiathos has 70 beaches all around it. Skiathos Town port ferry services connect to Skopelos, Volos, Agios Konstantinos and the rest of Greece.
Skiathos has approximately 70 beaches, including one nudist beach called Banana Beach at the south end of the island.
The movie Mamma Mia was partially filmed on Skiathos and nearby island Skopelos.
Much of the island is forested. The area around the villages and Skiathos Town is farmland. The island's forests are pine and are located in the southeastern part of the island. The island of Skopelos can be seen from Skiathos with the more distant islands of Euboea and Scyros also visible in clearer conditions. The mountain top, which has a communications tower, is to the west. The slope of the hill is to the north and contains several valleys.