Country profile

United States

United States of America · North America

👥 Population

341,784,857

World Bank · 2025

🏛 Capital

Washington D.C.

🗺 Area

9,372,610 km²

among the world’s largest

💹 GDP (nominal)

$30.77T

World Bank · 2025

📈 HDI

0.938

UNDP · 2023

📍 Pop. density

36 /km²

💱 Currency

USD

United States dollar

🗣 Languages

English

About United States

United States (officially United States of America) is a country in North America, with Washington D.C. as its capital. It is home to roughly 341.78 million people, giving a population density of about 36 people per square kilometre. The country covers 9,372,610 km² of land and shares land borders with 2 neighbouring countries. Its economy is valued at approximately $30.77T in nominal GDP (2025), and it records a Human Development Index of 0.938. The official currency is the United States dollar (USD), and the main language is English.

How United States is governed

🏛 Federal presidential republic

Head of State

President

Both head of state and head of government; holds executive power.

Head of Government

President

Leads the executive branch; commander-in-chief.

Legislature

Congress

Bicameral — House of Representatives — 435 seats; Senate — 100 seats

Who holds the power?

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.

Development profile (each axis 0–100%, higher is stronger)

Key indicators

Latest available data · World Bank & UNDP.

💹 Economy

GDP (PPP)

$29.18T

GDP/capita (PPP)

$85,810

GDP growth

2.2%

Inflation

2.9%

Unemployment

4.2%

👥 People

Life expectancy

78.9 yrs

Fertility rate

1.63

Pop. growth

0.5%

Urban population

80.2%

Infant mortality /1k

5.5

🌍 Quality of Life

Internet users

94.7%

Physicians /1k

3.68

Renewable energy

10.9%

United States's GDP over time (nominal, US$)

Travel & practical

Capital

Washington D.C.

Currency

USD

Dialing code

+1201

Internet TLD

.us

🌐 Get a United States eSIM 🏨 Where to stay in United States

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Fun facts about United States

The United States has no official language at the federal level.
Its road network is among the longest in the world, spanning millions of kilometres.
The US dollar is the world's primary reserve currency.
United States is the 3rd most populous country in the world, with about 341.78 million people.
It is the most populous country in Americas.
By land area it is the 4th-largest country in the world, covering 9,372,610 km².
United States has the world's largest economy by nominal GDP ($30.77T).