Koropi in the context of "Attiki Odos"

The Athens metropolitan area (Greek: Μητροπολιτική Περιοχή της Αθήνας) spans 2,928.717 km (1,131 sq mi) within the Attica region and consists of 58 municipalities plus parts of East Attica and West Attica, having reached a population of 4,073,179 according to the 2021 census. The municipalities of Athens and Piraeus both serve as the two metropolitan centres of the Athens metropolitan area.

According to the Hellenic Telecommunications and Post Commission, the Athens metropolitan area consists of all areas with a dialing code of 21 and includes areas such as Salamina, Elefsina, Kifissia, Mandra, Magoula,Aspropyrgos, Pallini, Agios Stefanos, Dionysos, Parnitha, Koropi, Vari, Vouliagmeni, Voula and the Athens International Airport.

Kropia (Greek: Κρωπία) is a municipality in East Attica, Greece and has a land area of 102.0 km. The soil is very fertile (something common in the Mediterranean) and many crops are grown on it, most importantly vineyards, olives, figs, pistachios, honey and vegetables. Its population was 30,817 at the 2021 census. The seat of the municipality is in the town of Koropi (pop. 19,164 in 2011). In descending order of population, its other villages are Kítsi [fr] (pop. 4,788), Agía Marína [fr] (3,765), Karellás (1,579) [el], and Ágios Dimítrios (1,011) [fr].

Olympic Air has its head office in Kropia.

Olympic Air S.A. (Greek: Ολυμπιακή) is a regional airline and a subsidiary of the Greek carrier Aegean Airlines. It was formed as part of the privatization of the former Greek national carrier Olympic Airlines, a company that carried the name Olympic Airways from 1957 to the beginning of the 21st century. Olympic Air commenced limited operations on 29 September 2009, after Olympic Airlines ceased all operations, the full-scale opening of the company taking place two days later on 1 October 2009. Its main hubs are Thessaloniki International Airport and Athens International Airport. Rhodes International Airport serves as a small secondary hub. The airline's headquarters are in Building 57 at Athens International Airport in Spata, and its registered seat is in Koropi, Kropia, East Attica.

The airline uses the IATA code OA that it inherited from Olympic Airlines, and the ICAO code OAL. The airline was launched using the ICAO code NOA, but has been reported to have bought the OAL code used by Olympic Airlines.

Sphettus or Sphettos (Ancient Greek: Σφηττός) was one of the twelve cities of ancient Attica, and subsequently a deme. That it was situated either in the Mesogaea or the Paralia is certain from the legend, that Pallas, who had obtained these districts, marched upon Athens from Sphettus by the Sphettian Way. There are good reasons for believing that Pallas must have marched round the northern extremity of Hymettus; and consequently the Sphettian road must have taken that course.

The site of Sphettus has been located northwest of Koropi below Christos chapel.