Yūki is a city located in Ibaraki Prefecture, Japan. As of 1 January 2024, the city had an estimated population of 49,252 in 19,889 households …Yūki is a city located in Ibaraki Prefecture, Japan. As of 1 January 2024, the city had an estimated population of 49,252 in 19,889 households and a population density of 749 persons per km. The percentage of the population aged over 65 was 30.8%. The total area of the town is 65.76 square kilometres. Yūki is famous for its production of yūki-tsumugi, a traditional fabric production technique which is an Important Intangible Cultural Property, and the city has a rich religious history, with many older Buddhist temples and Shinto shrines.