As of 2025, the population of United Kingdom is approximately 69.49 million people (69 487 000), making it the 22nd most populous country in the dataset of 217 countries, with a 0.85% share of the combined total.
Over the past five years the population of United Kingdom changed by +4.12%, and over the past ten years by +6.76%. By five-year growth, United Kingdom ranks 123rd of 217 countries; in terms of momentum, growth is accelerating — from +0.50% to +0.81% per year.
| Year | Population | Diff | Diff % | Share of Universe |
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