Inzai is a city in Chiba Prefecture, Japan. It has about 105,463 people and 42,388 households. Inzai has an area of 123.8 square kilometers and a population density of 850 people per square kilometer. The city's flower is cosmos, the tree is cherry blossom, the bird is Japanese white-eye and the fish is catfish. Inzai's mascot is Inzaikun.