Niiza is a city located in the Saitama Prefecture of Japan. It serves as a residential and urban center within the region, characterized by its specific geographic footprint and population distribution.
As of January 1, 2021, the city had an estimated population of 166,208 people living in 76,639 households. The total land area of Niiza is 22.78 square kilometres (approximately 8.80 square miles), resulting in a population density of 7,300 persons per square kilometre.