Zama is a city located in Kanagawa Prefecture, Japan. As of 1 June 2021, the city had an estimated population of 130,667 and a population density of 7,400 persons per km2. The total area of the city is 17.58 square kilometres (6.79 sq mi). The city hosts the United States Army Camp Zama base.

Kanagawa Prefecture is a prefecture of Japan located in the Kantō region of Honshu. Kanagawa Prefecture is the second-most populous prefecture of Japan at 9,221,129 and third-densest at 3,800 inhabitants per square kilometre (9,800/sq mi). Its geographic area of 2,415 km2 (932 sq mi) makes it fifth-smallest. Kanagawa Prefecture borders Tokyo to the north, Yamanashi Prefecture to the northwest and Shizuoka Prefecture to the west.