Richmond is a city in the coastal Lower Mainland region of British Columbia, Canada. Mainly a suburban city, it occupies almost the entirety of Lulu Island, between the two estuarine distributaries of the Fraser River. Encompassing the adjacent Sea Island and several other smaller islands and uninhabited islets to its north and south, the suburb neighbours Vancouver and Burnaby on the Burrard Peninsula to the north, New Westminster and Annacis Island to the east, Delta to the south, and the Strait of Georgia to the west.

The Lower Mainland is a geographic and cultural region of the mainland coast of British Columbia that generally comprises the regional districts of Metro Vancouver and the Fraser Valley. Home to approximately 3.05 million people as of the 2021 Canadian census, the Lower Mainland contains sixteen of the province's 30 most populous municipalities and approximately 60% of the province's total population.