Peterborough is a cathedral city in the City of Peterborough district in the ceremonial county of Cambridgeshire, England. The city is 74 miles (119 km) north of London, on the River Nene. As of the 2021 census, the Peterborough urban area had a population of 192,178, In 2023, the Peterborough City Council estimated the population of the wider district to be 219,510.