Western Greece Region is one of the thirteen administrative regions of Greece. It comprises the western part of continental Greece and the northwestern part of the Peloponnese peninsula. It occupies an area of 11,336 km2 (4,377 sq mi) and its population is, according to the 2011 census, at 679,796 inhabitants. The capital of the Western Greece is Patras, the third-largest-city in the country, with a population of about 280,000 inhabitants. The NUTS 2 code for the region of Western Greece is EL63.