Located in the center of Japan, it has long played an important part as the crossroads of Japan, connecting the east to the west through such routes as the Nakasendo Lane. During the Sengoku-era, many people referred to Gifu by saying, "control Gifu and you control Japan."
One of the few landlocked prefectures in Japan, Gifu shares borders with seven other prefectures: Aichi, Fukui, Ishikawa, Mie, Nagano, Shiga and Toyama. Japan's postal codes all start with a three-digit number, ranging from 001 to 999. Part of Gifu has the 500 prefix, reflecting its location in the center of Japan. The center of Japanese population is currently located in Seki City, Gifu Prefecture. The center of population is a hypothetical point at which a country is perfectly balanced assuming each person has a uniform weight. The spot was calculated using the 2005 census.