2024 World Population By Country Uk. The united kingdom (uk) estimate population of 2023 was 67,736,802. China is currently the most populous country in the world, with a population estimated at more than 1.42 billion as of september 2022.
London’s population makes it by far the largest city in the united kingdom, with an estimated population of over 9.4 million. According to the office of national statistics latest estimates, the uk population is 68,138,484 people.