Its area spans 364,485 sq km making it slightly smaller than the U.S. state of California. The coastline, which measures 29,751 km, has generated an extremely large number of ports—about 100. Approximately 42% of the entire population of Japan lives near a harbor.
The country is also densely populated and largely urbanized. Japan’s top five urban areas are host to one or more port cities: metropolitan Tokyo (ports of Tokyo and Yokohama); Osaka-Kobe (port of Osaka and Kobe); Nagoya (port of Nagoya); Kitakyushu-Fukuoka (port of Hakata) and Shizuoka-Hamamatsu (port of Shimizu).