United Kingdom vs United States
United Kingdom leads on 2 of 6 metrics, United States on 4. Here's the full side-by-side breakdown.
United Kingdom vs United States: the verdict
United States is the more populous of the two, home to 341.78 million people — about 4.9× the population of United Kingdom (69.49 million).
On the economy, United States has the larger nominal GDP at $30.77T. But measured per person, United States comes out ahead on GDP per capita ($90,027), a better proxy for average living standards.
Geographically, United States is the larger country, spanning 9,372,610 km².
United Kingdom records the higher Human Development Index (0.946), reflecting stronger combined outcomes in health, education and income (source: UNDP).
Overall, United States leads on more headline metrics in this comparison, though "which country is better" depends entirely on which measures matter to you.
Full breakdown
United Kingdom
United KingdomUnited KingdomGovernment & politics
United KingdomUnited Kingdom
The UK is a constitutional monarchy with an uncodified constitution. The monarch is the head of state but reigns rather than rules — the role is symbolic and politically neutral. Real power lies with the Prime Minister, who is the leader of the party commanding a majority in the elected House of Commons, and the Cabinet. Parliament is sovereign, meaning it can make or unmake any law, and there is no single written constitution or supreme court that can strike laws down on constitutional grounds in the American sense.
United States
The United States has a presidential system with a strict separation of powers between three co-equal branches. The President is uniquely both head of state and head of government, elected separately from the legislature via the Electoral College. Congress writes the laws and controls spending; the President executes them and can veto legislation; the Supreme Court interprets the constitution. This system of checks and balances means power is deliberately divided — the President cannot dissolve Congress, and Congress can impeach the President.
Travel & practical
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Frequently asked questions
Which country has a higher GDP, United Kingdom or United States?
United States has the higher nominal GDP at $30.77T, compared with $4T for United Kingdom (World Bank).
Which country has a larger population, United Kingdom or United States?
United States has the larger population with 341,784,857 people, versus 69,487,000 for United Kingdom.
Which is larger in area, United Kingdom or United States?
United States is larger, covering 9,372,610 km² compared with 242,900 km² for United Kingdom.