Population history of indigenous peoples of the Americas about one million people. The Maya population is today estimated at six million, which is about the same as at the end of the 15th century, according to some estimates. In what is now Brazil, the indigenous population declined from a pre-Columbian high of an estimated four million to some 300,000. While it is difficult to determine exactly how many Natives lived in North America before Columbus, estimates range from a low of 2.1 million to 7 million people to a high of 18 million. The aboriginal population of Canada during the late 15th century is estimated to have been
County of London London into 28 metropolitan boroughs. These replaced the ancient parish vestries and district boards as the second tier of local government. County of London boroughs numbered in the information box on the right side: † Not a metropolitan borough. Population fell after World War I and as recorded at each census until its 1965 demise. In 1901 the population was 4.5 million and by 1961 it had fallen to 3.2 million. Following the 1931 census more of the population of "Greater London" (defined at the time as the Metropolitan Police District and City of London) lived outside the county than