Izu is a city situated in the central portion of the Izu Peninsula within the Shizuoka Prefecture of Japan. The city covers a total area of 363.97 square kilometers (140.53 square miles).
As of April 1, 2019, the city had an estimated population of 30,678 people living in 13,390 households. The population density for the area is recorded at 84 persons per square kilometer.