---
title: "United States — capital, area, population and currency"
description: "United States: capital Washington, D.C., area 9,833,517 km², population 341,784,857 (2025), currency United States dollar. Languages, time zones and calling code."
url: https://atoneplace.net/country/united-states/
site: "At One Place"
---

# United States

**United States: Capital Washington, D.C.**

9,833,517 km² · 341,784,857 people (2025) · United States dollar

Third or fourth largest country in the world depending on how China's area is counted. It spans six standard time zones across the fifty states, from UTC-10 in Hawaii to UTC-5 on the east coast. Death Valley holds the highest reliably recorded air temperature on Earth, 56.7 °C in 1913, and is 86 m below sea level; Denali, 5,500 km away in Alaska, is 6,190 m.

## The facts

- **Capital:** Washington, D.C.
- **Largest city:** New York City
- **Area:** 9,833,517 km² — 3,796,741 sq mi
- **Population:** 341,784,857 (2025)
- **Density:** 34.8 people per km²
- **Currency:** United States dollar (USD, $)
- **Official language:** English
- **Time zones:** UTC-10:00, UTC-09:00, UTC-08:00, UTC-07:00, UTC-06:00, UTC-05:00
- **Calling code:** +1
- **Drives on the:** right
- **ISO codes:** US · USA
- **Continent:** North America

## How it compares

- **By area:** 3 of 200
- **By population:** 3 of 200

> Population is the only figure on this page that dates — it is a 2025 estimate and will drift. Area, capital, currency, languages, calling code and driving side change rarely or never.

## Countries of a similar size

| Country | Area (km²) | Population |
| --- | --- | --- |
| Russia | 17,098,242 | 143,513,328 |
| Canada | 9,984,670 | 41,651,653 |
| United States ← | 9,833,517 | 341,784,857 |
| China | 9,596,960 | 1,406,585,000 |
| Brazil | 8,515,770 | 212,812,405 |

## Common questions

### What is the capital of United States?

Washington, D.C.

### What currency does United States use?

The United States dollar (USD).

### How big is United States?

9,833,517 km², or 3,796,741 square miles — 3 of 200 by area.

### Which side of the road does United States drive on?

The right.

## Related pages

- [Russia](https://atoneplace.net/country/russia/)
- [Canada](https://atoneplace.net/country/canada/)
- [China](https://atoneplace.net/country/china/)
- [Brazil](https://atoneplace.net/country/brazil/)
- [Mexico](https://atoneplace.net/country/mexico/)
- [Canada](https://atoneplace.net/country/canada/)
- [Guatemala](https://atoneplace.net/country/guatemala/)
- [Haiti](https://atoneplace.net/country/haiti/)
- [Dominican Republic](https://atoneplace.net/country/dominican-republic/)
- [Honduras](https://atoneplace.net/country/honduras/)
- [Cuba](https://atoneplace.net/country/cuba/)
- [Nicaragua](https://atoneplace.net/country/nicaragua/)

## Sources

- The World Factbook — Central Intelligence Agency (https://www.cia.gov/the-world-factbook/) [Public domain (US Government)]
- World Bank Open Data — The World Bank (https://data.worldbank.org/) [CC BY 4.0]