Piraeus of social problems also emerged with the concentration of new populations in the suburbs of the old city, such as Nikaia, Keratsini, Drapetsona and Korydallos. The involvement of Greece in World War II came as a major setback to the city's progress. After the war, the city began its development once more, as damage to the port and the city were repaired and new additions took shape after 1955. Piraeus is now the third largest municipality in Greece; the city proper with its suburbs form the Piraeus urban area, which is incorporated in the Athens urban area, thus making Piraeus
Port of Piraeus the Hellenic Republic Asset Development Fund 23,14 % and other investors 25,86 % of Piraeus Port Authority. As of April 2016 the port ranks 39th globally in terms of container capacity. The container part of the port is made up of three terminals: The total capacity is hence now standing at 6,7m TEUs. The cargo terminal has a storage area of 180,000 m and an annual traffic capacity of 25,000,000 tonnes. The Port of Piraeus has two car terminals of approximately 190,000 m, storage capacity of 12,000 cars and a transshipment capacity of 670,000 units per year. In 2017 the