The population of the United Kingdom as of recent estimates in 2025 is approximately 69.6 million people. This makes the UK the 22nd largest country by population in the world. The population is distributed mostly in England, with about 84% of the total UK population living there, followed by Scotland, Wales, and Northern Ireland. London, the capital city, has about 8.8 million inhabitants, making it the largest city in the UK by population.