Koropi station is located east of the town of Koropi in East Attica. This station first opened to Proastiakos trains on 30 July 2004, with Athens Metro services calling at this station from 10 July 2006. The station’s platforms have two levels, with each end serving trains from either the Athens Metro or Proastiakos: Proastiakos Kiato-Airport line trains stop at the northern end while Athens Metro Line 3 trains stop at the southern end.