Chiba , literally "Thousand(s) Leaves", is the capital city of Chiba Prefecture, Japan. It sits about 40 kilometres (25 mi) southeast of the center of Tokyo on Tokyo Bay. Chiba City became a government-designated city in 1992. In February 2016, its population was 972,861, with a population density of 3,580 people per square kilometer. The city has an area of 271.76 square kilometres (104.93 sq mi).