Kythnos

For the hill featured in mythology, see Cynthus.

Kythnos Κύθνος
Municipality
Chora, Kythnos
Kythnos Location within Greece
Coordinates: 37°23′9″N 24°25′41″E
Country	Greece
Administrative region	South Aegean
Regional unit	Kea-Kythnos
Seat	Chora
Government
• Mayor	Stamatis Garderis
Area
• Municipality	100.2 km2 (38.7 sq mi)
Highest elevation	297 m (974 ft)
Lowest elevation	0 m (0 ft)
Population  (2021)
• Municipality	1,568
• Density	15.65/km2 (40.53/sq mi)
• Community	714
Time zone	UTC+2 (EET)
• Summer (DST)	UTC+3 (EEST)
Postal code	840 06
Area code	22810
Vehicle registration	ΕΜ
Website	www.kythnos.gr

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Kythnos (Greek: Κύθνος, pronounced [ˈkiθnos]), commonly called Thermia (Θερμιά), is a Greek island and municipality in the Western Cyclades between Kea and Serifos. It is 56 nautical miles (104 km) from the Athenian harbor of Piraeus. The municipality Kythnos is 100.187 km² (38.68 sq mi) in area and has a coastline of about 100 km (62 mi). Mount Kakovolo is island's highest peak (365m).