London's population
| Population | ||
| Year | London | Greater London |
| 1801 | 959,310 | 1,096,784 |
| 1811 | 1,139,355 | 1,303,784 |
| 1821 | 1,379,543 | 1,573,210 |
| 1831 | 1,655,582 | 1,878,229 |
| 1841 | 1,949,277 | 2,207,653 |
| 1851 | 2,363,341 | 2,651,939 |
| 1861 | 2,808,494 | 3,188,485 |
| 1871 | 3,261,396 | 3,840,595 |
| 1881 | 3,830,297 | 4,713,441 |
| 1891 | 4,227,954 | 5,571,968 |
| 1901 | 4,536,267 | 6,506,889 |
| 1911 | 4,521,685 | 7,160,441 |
| 1921 | 4,484,523 | 7,386,755 |
| 1931 | 4,397,003 | 8,110,358 |
| 1939 | 4,013,400 | 8,615,050 (est) |
| 1951 | 3,347,982 | 8,348,023 |
| 1961 | 3,115,114 | 8,171,902 |
| 1971 | 3,045,436 | 8,119,246 |
| 1981 | 2,497,978 | 6,696,008 |
| 1991 | 2,504,451 | 6,679,699 |
| 2001 | 2,765,975 | 7,172,036 |