|Regional unit||East Attica|
|Elevation||106 m (348 ft)|
|Time zone||EET (UTC+2)|
|• Summer (DST)||EEST (UTC+3)|
|Postal code||194 00|
Koropi is situated east of the Hymettus mountain, and 16 km southeast of central Athens. It is 8 km southwest of the Eleftherios Venizelos International Airport. The Koropi station is served by Line 3 of the Athens Metro, and by Proastiakos suburban trains. Motorway 6 connects Koropi with Athens.
Koropi is the largest settlement in the municipality Kropia. Other settlements within Kropia are Karellas to the north, Kitsi to the southwest, and Agia Marina and Agios Dimitrios further south, on the Saronic Gulf coast.
- "Detailed census results 2011" (in Greek).
- "Prospectus." Marfin Investment Group. 8 February 2010. Retrieved on 27 June 2010. "OLYMPIC AIR’s registered seat is located at the 1st km of Koropi-Vari Avenue and Ifaistou Str., in the municipality of Koropi, Prefecture of Attica."
- "Contact Us." Athens Airways. Retrieved on 8 September 2010. "38 Vassileos Konstantinou Str, GR 19400, Koropi Attikis" - Greek address: "Βασιλέως Κωνσταντίνου 38, ΤΚ 19400, Κορωπί Αττικής"