Fujimi is a city located in Saitama Prefecture, Japan. As of 1 January 2021, the city had an estimated population of 112,211 in 53,051 hous…Fujimi is a city located in Saitama Prefecture, Japan. As of 1 January 2021, the city had an estimated population of 112,211 in 53,051 households and a population density of 5700 persons per km². The total area of the city is 19.77 square kilometres.