Tsuchiura is a city located in Ibaraki Prefecture, Japan. As of 1 January 2024, 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%. The total area of the city is 122.89 square kilometres. About 3,000 residents are non-Japanese, a large proportion of these being Filipinos, Chinese or Brazilians.