Corinthia (Greek: Κορινθία, Korinthía) is the area around the city of Corinth. Presently, it is a prefecture of Greece, part of the periphery of Peloponnese. It is the third-most populated prefecture on the Peloponnese peninsula and the largest in the region since the 1980s when it surpassed the neighboring Arcadia's population in which it is now placed below.