Hirosaki is a city located in western Aomori Prefecture, Japan. As of 1 February 2023, the city had an estimated population of 163,639 in 71,044 households, and a population density of 310 per square kilometre. The total area of the city is 524.20 square kilometers. Hirosaki developed as a castle town for the 100,000 koku Hirosaki Domain ruled by the Tsugaru clan. The city is currently a regional commercial center, and the largest producer of apples in Japan.