Greece (Greek: Ελλάδα, Elláda), officially the Hellenic Republic (Greek: Ελληνική Δημοκρατία, Ellīnikī́ Dīmokratía) and known since ancient times as Hellas (Greek: Ελλάς, Ellás), is a country located in southeastern Europe. According to the 2011 census, Greece's population is around 10.8 million. Athens is the nation's capital and largest city, followed by Thessaloniki, which is commonly referred to as the co-capital. More: en.wikipedia.org.