Hongkou is a district of Shanghai, forming part of the northern urban core. It has a land area of 23.48 km2 (9.07 sq mi) and a population of 757,498 as of 2020. The district borders Yangpu to the east, Pudong to the southeast, Huangpu to the southwest, Jing'an to the west and Baoshan to the north.

The Astor House Hotel, known as the Pujiang Hotel (浦江饭店) in Chinese from 1959–2018, was described as once "one of the famous hotels of the world". Established in 1846 as Richards' Hotel and Restaurant (礼查饭店) on The Bund in Shanghai, it was located at 15 Huangpu Lu, Shanghai, near the confluence of the Huangpu River and the Suzhou Creek in the Hongkou District, near the northern end of the Waibaidu (Garden) Bridge, from 1858 on. The hotel closed on 1 January 2018, after being purchased by an undisclosed local business. It was converted to the China Securities Museum, which opened in December 2018.