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United Kingdom

🇬🇧 Northern Europe · United Kingdom of Great Britain and Northern Ireland

69,487,000
Population
#22 of 193
242,900 km²
Land area
#78 of 195
$4T
GDP (nominal)
🏆 #5 of 192
0.946
HDI
#13 of 191

How United Kingdom ranks globally

Population69,487,000 #22 of 193
Land area242,900 km² #78 of 195
GDP (nominal)$4T 🏆 #5 of 192
Life expectancy81.4 yrs #35 of 193
HDI0.946 #13 of 191

About United Kingdom

United Kingdom (officially United Kingdom of Great Britain and Northern Ireland) is a country in Northern Europe, with London as its capital. It is home to roughly 69.49 million people, giving a population density of about 286 people per square kilometre. The country covers 242,900 km² of land and shares land borders with 1 neighbouring country. Its economy is valued at approximately $4T in nominal GDP (2025), and it records a Human Development Index of 0.946. The official currency is the British pound (GBP), and the main language is English.

Key indicators

World Bank · UNDP

💹 Economy

$4.29T
GDP (PPP)
$62,009
GDP/capita (PPP)
1.4%
GDP growth
3.9%
Inflation
4.7%
Unemployment

👥 People

81.4 yrs
Life expectancy
1.55
Fertility rate
0.3%
Pop. growth
83.3%
Urban population
4.1
Infant mortality /1k

🌍 Quality of Life

95.5%
Internet users
3.3
Physicians /1k
12.2%
Renewable energy

GDP over time

United Kingdom's GDP over time (nominal, US$)
$0$1.05T$2.1T$3.15T$4.2T197019982025 United Kingdom

How United Kingdom measures up

Development profile (each axis 0–100%, higher is stronger)
WealthHealthHuman dev.InternetUrbanSurvival

How United Kingdom is governed

🏛 Constitutional monarchy (parliamentary)
Head of State
Monarch

Ceremonial head of state; symbolic, politically neutral.

Head of Government
Prime Minister

Holds executive power; leads the government.

Legislature
Parliament

Bicameral — House of Commons — 650 elected MPs; House of Lords — appointed & hereditary

Who holds the power?

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.

Did you know?

The United Kingdom is made up of four nations: England, Scotland, Wales and Northern Ireland.

London was founded around two thousand years ago by the Romans as Londinium.

The UK has no single written constitution.

United Kingdom is the 22nd most populous country in the world, with about 69.49 million people.

By land area it is the 78th-largest country in the world, covering 242,900 km².

It has the world's 5th-largest economy by nominal GDP ($4T).

United Kingdom shares land borders with 1 country.

Quick quiz — do you know United Kingdom?

What is the capital of United Kingdom?

Travel & practical

London
Capital
GBP
Currency
+44
Dialing code
.uk
Internet TLD
🌐 Get a United Kingdom eSIM 🏨 Where to stay

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Neighbouring countries

Ireland

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