United States
United States of America
People: American
The United States is the world's largest economy, spanning six time zones across the mainland, Alaska and Hawaii. United States is located in North America and has a population of around 340.1 million. Its capital city is Washington, D.C., and the most widely spoken official language is English.
By the numbers, United States is the 3rd most populous of the 196 countries covered on this site, home to 4.25% of the world's population. By land area it ranks 4th out of 196, with a population density of roughly 36 people per km².
Facts last checked 31 August 2026.
United States — key facts at a glance
| Official Name | United States of America |
|---|---|
| Capital City | Washington, D.C. |
| Continent | North America |
| Region | North America |
| Population | 340,110,988 |
| Area | 9,525,067 km² |
| Currency | United States dollar (USD) $ |
| Official Language | English |
| Dialling Code | +1 |
| Internet TLD | .us |
| Timezones | UTC-12:00, UTC-11:00, UTC-10:00, UTC-09:00, UTC-08:00, UTC-07:00, UTC-06:00, UTC-05:00, UTC-04:00, UTC+10:00, UTC+12:00 |
| Drives on the | Right side |
| Emergency Number | 911 |
| ISO Code | US / USA |
| Borders | Canada, Mexico |
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Getting to and around United States
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Frequently Asked Questions about United States
What is the capital and currency of United States?
The capital of United States is Washington, D.C. and the currency is the United States dollar (USD), symbol $.
What is the capital of United States?
The capital of United States is Washington, D.C..
What currency does United States use?
United States uses the United States dollar (USD, symbol: $).
What language do they speak in United States?
The official language of United States is English.
What is the dialling code for United States?
The international dialling code for United States is +1.
What side of the road does United States drive on?
United States drives on the right-hand side of the road.
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