The Municipality of Karystos belongs to the Prefecture of Evia in the Region of Sterea Ellada and its current form is due to the consolidation of the former municipalities of Karystos, Styrai, Marmari and the Kafirereos community, according to the Kallikratis Program.
The Municipality has an area of ​​672,43km2 and a population of 12,180 inhabitants, based on the latest census of 2011.
The seat of the Municipality of Karystos is the coastal town of Karystos.
According to mythology the name of Karystos is due to the hero Karystos, son of Chiron. The area was first inhabited by Dryopes and later by Avantes. The city had developed, and for this reason it also cut its own currencies. In 490 BC it was conquered by the Persians and in 480 the inhabitants were in favor of the Persians and for that reason they were punished by Themistocles. They were forced to join the alliance of Delos. Later Karystos was submited to Philip of Macedonia. Byzantine times the city was a diocese capital. After Constantinople was captured by the Crusaders in 1204, Karystos was conquered by the Venetians. The castle of Karystos, which dominates today at the foot of Ochi, was one of the strongest of Frankish rule and was called CastelloRosso, which means a red castle. In 1406 the city was deserted when the Venetians appeared as conquerors. In 1470 Karystos was occupied by the Ottomans, who showed particular cruelty to the inhabitants who fought during the Revolution.
Today's Karystos has an excellent urban design and is built in the 19th century on plans by the Bavarian town planner Birbach.
Important sights of Karystos are Bourtzi, the tower on the eastern side of the harbor, built by the Venetians (1366-1470). The quarries of the green-white marble of Karystos developed during the years of the Roman Empire, where exports took place throughout the Roman world. This particular marble was used in the Hadrian's library in Athens, the imperial markets of August and Trajan in Rome and others. Byzantine times were also used in many monuments, such as Hagia Sophia in Constantinople, the Basilica of St. Demetrius in Thessaloniki, the Monastery of Osiou Louka in Fokida.
In the area there is the ancient chestnut forest, as well as the gorge of Dimosari which is considered one of the most important in Greece.