Area: 13,4 km2
Coastline length: 35 km
Island capital and its population: Megalo Chorio (144)
Administrative structure: Region of South Aegean, Prefecture of the Dodecanese, Province of Kalymnos, Community of Agathonisi
Archaeological sites and monuments: Byzantine "vaults"
Natural monuments: The island has been included in the European network "NATURA 2000"
Cultural clubs: Cultural association "Hyetoussa"
Religious feasts: Feast on the 9th day from Virgin Mary's ascension (August 23), and on St. Panteleimon's day (July 27)