Mito is the capital city of Ibaraki Prefecture, in the northern Kantō region of Japan. As of 1 January 2024, the city had an estimated population of 268,036 in 126,055 households and a population density of 1,233 persons per km2. The percentage of the population aged over 65 was 27.1%. The total area of the city is 217.32 square kilometres.