Tsuchiura (土浦市, Tsuchiura-shi) is a city located in Ibaraki Prefecture, Japan. As of 1 January 2024[update], the city had an estimated population in 2024 of 142,181 people in 66,629 households, and a population density of 1,157 persons per squate kilometre. The proportion of the population aged over 65 was 29.7%.[1] The total area of the city is 122.89 square kilometres (47.45 sq mi). About 3,000 residents are non-Japanese, a large proportion of these being Filipinos, Chinese or Brazilians. Located in southwestern Ibaraki Prefecture, Tsuchiura is situated along the western shore of Lake Kasumigaura, the second largest lake in Japan. Tokyo lies about 60 km to the south, and Tsukuba science city borders Tsuchiura to the west. Ibaraki Prefecture