Jiamusi is a prefecture-level city in eastern Heilongjiang province, People's Republic of China. Located along the middle and lower reaches of the Songhua River, it faces Russia's Khabarovsk Krai across the Ussuri River and the Heilongjiang. In 2018, Jiamusi had a GDP of RMB 101.2 billion with a 4.3% growth rate. Its population was 2,156,505 at the 2020 census whom 862,555 lived in the built up area comprising 4 urban districts.