St. John's is the capital and largest city of the Canadian province of Newfoundland and Labrador. It is located on the eastern tip of the Avalon Peninsula on the island of Newfoundland. The city spans 446.04 km (172.22 sq mi) and is the easternmost city in North America (excluding Greenland). The closest European settlement is Fajã Grande, Azores, Portugal, about 2,000 kilometres (1,100 nautical miles) away.
Its name has been attributed to the belief that John Cabot sailed into the harbour on the Nativity of John the Baptist in 1497, although it is most likely a legend that came with British settlement. A more realistic possibility is that a fishing village with the same name existed without a permanent settlement for most of the 16th century. Indicated as São João on a Portuguese map from 1519, it is one of the oldest cities in North America. It was officially incorporated as a city in 1888. With a metropolitan population of approximately 239,316 (as of 16 January 2025), the St. John's Metropolitan Area is Canada's 22nd-largest metropolitan area and the second-largest Census Metropolitan Area (CMA) in Atlantic Canada, after Halifax, Nova Scotia.