Hitachiōmiya is a city situated in the Ibaraki Prefecture of Japan. It covers a total land area of 348.45 square kilometers, which is approximately 134.54 square miles.
As of July 1, 2020, the city had an estimated population of 39,281 residents living in 16,047 households. The population density of the area is recorded at 220 persons per square kilometer. Within this demographic, approximately 37.6% of the population is aged 65 or older.