Barcelona, the capital of Catalonia, has a population of over 1,635,000 and is at the heart of a metropolitan region covering some 2,500 km2 with almost 5,000,000 residents, representing 63.4% and 10.4% of the Catalan and Spanish population, respectively. Compared to other well-established metropolitan areas, in terms of population the metropolitan region of Barcelona is approximately a quarter of the size of that of New York, while it is larger than the metropolitan areas of Seattle, Berlin and Montreal.