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Poseidonia is also the ancient Greek name of Paestum. In the myth "The Gift of Athena", Poseidonia is a candidate name for Athens.
Poseidonia is located in Greece
Coordinates: 37°23′N 24°53′E / 37.383°N 24.883°E / 37.383; 24.883Coordinates: 37°23′N 24°53′E / 37.383°N 24.883°E / 37.383; 24.883
Country Greece
Administrative region South Aegean
Regional unit Syros
Municipality Syros-Ermoupoli
 • Municipal unit 23.7 km2 (9.2 sq mi)
Population (2001)[1]
 • Municipal unit 3,006
 • Municipal unit density 130/km2 (330/sq mi)
Time zone EET (UTC+2)
 • Summer (DST) EEST (UTC+3)
Vehicle registration EM

Poseidonia (Greek: Ποσειδωνία, named after Poseidon) is a village and a former municipality on the island of Syros, in the Cyclades, Greece. Since the 2011 local government reform it is part of the municipality Syros-Ermoupoli, of which it is a municipal unit.[2] The population was 3,006 inhabitants at the 2001 census, and the land area is 23.705 km². The municipal unit shares the island of Syros with the municipal units of Ano Syros and Ermoupoli. Also known as Dellagrazia (name taken from a small church Maria Della Grazia).


  1. ^ De Facto Population of Greece Population and Housing Census of March 18th, 2001 (PDF 39 MB). National Statistical Service of Greece. 2003. 
  2. ^ Kallikratis law Greece Ministry of Interior (Greek)