Milan is a city in Italy and the capital of the region of Lombardy and of the province of Milan. The city proper has a population of about 1,320,000, while its urban area, roughly coinciding with its administrative province and the bordering Province of Monza and Brianza, is one of Europe's largest with an estimated population of 4 million spread over 1,980 km2, with a consequent population density of more than 2,000 inhab./km2. The growth of many suburbs and satellite settlements around the city proper following the great economic boom of the 1950-60s and massive commuting flows suggest that socioeconomic linkages have expanded well beyond the boundaries of the city proper and its agglomeration, creating a metropolitan area of 7.4 million population expanded all over the central section of Lombardy region. It has been suggested that the Milan metropolitan area is part of the so-called Blue Banana, the area of Europe with the highest population and industrial density.