The population of the countries and regions of the United Kingdom was last measured by census in 2001, though the figures used here are from the 2010 estimates. England is by far the most populous country of the United Kingdom and its population is therefore also presented by Region.
| Rank | Name | Population | Percent |
|---|---|---|---|
| 1 | England | 51,446,000 | 83.6% |
|
- South East |
8,000,550 |
13.6% |
|
| 2 | Scotland | 5,222,100 | 8.6% |
| 3 | Wales | 3,006,400 | 4.9% |
| 4 | Northern Ireland | 1,789,000 | 2.9% |
| United Kingdom | 62,262,000 | 100% |
source: the 2001 census