Village altitude 570 m
Village land area 0,02 km2
Region averege altitude 588 m, mountain
Region land area 13,3 km2
Population 2011: 82, 2001: 152, 1940: 378 inhabitants.
Area per person 212 m² per person.
Economy relies mainly on agriculture (mainly vineyards, olives, vegetables), stock-farming.
Kosmadei village (Greek: Κοσμαδαίοι) is located northwest at the island, lying northeast at the foot of Kerkis mountain. The distances are: from Samos town 42 km, from Karlovasi town 12,5 Km, from Pythagorio town 42 Km and from Marathokampos village 14 Km.
Administratively consists, the local communities of Kosmadei , which belongs to Karlovasi municipal unit, of West Samos Municipality with Karlovasi capital
The village has excellent view from northeast to northwest, to Aegean sea till Asia Minor coasts and Karlovasi town lying ahead.
The road to get to the village is uphill, but compensates with a beautiful view and lush vegetation, through which the road passes.top
The first residents came from Kastania village and the name derives from it’s first inhabitant who was named “Kosmas”.top
The small but quite old settlement of “Nikoloudes” belongs to Kosmadei. It has 11 inhabitants and it is located 3 km north-east Kosmadei on the road that leads to the village. They are named after its first inhabitant who was named Nikolaou. The name still exists in the village.top