United Kingdom vs United States
United States has 4.9× the population of United Kingdom: 341,784,857 vs 69,487,000, a gap of 272.3 million. United States is growing faster (+0.52% vs +0.30% a year), adding about 1,785,717 people a year against +206,306. At these source-year rates the modelled relative population gap is widening. United Kingdom is the older society: 19.7% aged 65+ against 18.4% in United States, while United States has more children (17.1% under 15 vs 17.0%). United Kingdom is 7.7× as densely populated (283.2 vs 36.8 people per km²). People in United Kingdom live 2.5 years longer on average (81.4 vs 78.9). GDP per capita is 1.6× higher in United States ($90,027 vs $57,602).
Country/territory population bases: World Bank 2025 (United Kingdom) and 2025 (United States); growth years 2025 / 2025. Annual source values, not live counts; years may differ. Growth is national, not local.
United Kingdom vs United States — side by side
 United Kingdom |  United States | |
|---|---|---|
| Population | 69,487,0002025 | 341,784,8572025 |
| Growth rate / yr | +0.30%2025 | +0.52%2025 |
| Births per 1,000 | 9.92024 | 10.62024 |
| Deaths per 1,000 | 9.72024 | 9.02024 |
| Children per woman | 1.552024 | 1.632024 |
| Life expectancy | 81.4 yrs2024 | 78.9 yrs2024 |
| Aged 0–14 | 17.0%2025 | 17.1%2025 |
| Aged 65+ | 19.7%2025 | 18.4%2025 |
| Density | 283.2 /km²2023 | 36.8 /km²2023 |
| Area | 243,610 km²2023 | 9,831,510 km²2023 |
| Urban population | 83.3%2025 | 80.2%2025 |
| Net migration / yr | +389,9112025 | +1,230,6632025 |
| GDP per capita | $57,6022025 | $90,0272025 |
| Country population rank (available records) | #22 | #3 |
| Base / world population (World Bank 2025) | 0.85% | 4.16% |
Highlighted cell = the higher value (not "better"). Small print under each value is its own data year. Source: World Bank; country/territory population bases may have different years. These are not live counts.
Population since 1960
World Bank population history (not the separate UN WPP timeline). United Kingdom: 1.3× from 1960 to 2025; United States: 1.9× from 1960 to 2025. Left: absolute population. Right: each series indexed to its own first available year = 100; baseline years may differ.
More comparisons
Regions: Europe & Central Asia · North America · rankings
United Kingdom: United Kingdom vs India, United Kingdom vs China, United Kingdom vs United States, United Kingdom vs Indonesia, United Kingdom vs Pakistan, United Kingdom vs Nigeria, United Kingdom vs Brazil, United Kingdom vs Bangladesh.
United States: United States vs India, United States vs China, United States vs Indonesia, United States vs Pakistan, United States vs Nigeria, United States vs Brazil, United States vs Bangladesh, United States vs Russia.
Compare anything
Pick any two. The result renders instantly from the same live data as the map, and the URL updates so you can share it.
What changed during your lifetime?
Turn these figures into a private, five-scene personal world story.
Compare like with like
This page is a structured reference entry. Its sources, geographic definition and reference dates determine what the figures mean; it is not independent reporting about the causes of change. Read the accompanying explanation before comparing different places or vintages.