United Kingdom
United Kingdom of Great Britain and Northern Ireland · Northern Europe
The United Kingdom is a country in Northern Europe, with London as its capital, home to about 69,487,000 people. The United Kingdom shares a land border with one country, listed below alongside its flag, currency, calling code and ISO codes.
| Capital | London |
|---|---|
| Region | Northern Europe |
| Currency | British pound (GBP £) |
| Calling code | +44 |
| ISO codes | GB / GBR / 826 ISO 3166-1 |
| Flag emoji | 🇬🇧 |
| Population | 69,487,000 (2025) World Bank |
| Area | 242,900 km² |
| Languages | English |
| Internet domain | .uk |
| Demonym | British |
Bordering countries
What does the flag of United Kingdom mean?
The Union Flag layers three national crosses: the red cross of St George for England, the white saltire of St Andrew for Scotland, and the red saltire of St Patrick for Ireland, each separated by a white border under heraldic rules that keep colors from touching directly. Wales has no place on the flag, because its design dates back to a period when Wales was already treated as part of the Kingdom of England rather than as a separate nation. The current arrangement, with the crosses set so that red follows white clockwise around the flag, was fixed in 1801 when Ireland joined the union.
Source: Wikipedia: Flag of the United Kingdom
About United Kingdom
The United Kingdom, officially United Kingdom of Great Britain and Northern Ireland, is a United Nations member state in Northern Europe. Its capital and seat of government is London. It shares land borders with 1 country. The official currency is the British pound (£), using the code GBP.
Curious about the city itself? See what is the capital of United Kingdom for London’s own facts and history.
To call the United Kingdom from abroad, dial the country code +44. In international standards it is identified by the ISO 3166-1 codes GB (alpha-2) and GBR (alpha-3), which appear in everything from web addresses to shipping labels. As of 2025, its population is around 69,487,000.
Frequently asked questions
What is the capital of United Kingdom?
What currency does United Kingdom use?
What is the country calling code for United Kingdom?
What are the ISO codes for United Kingdom?
What is the flag emoji for United Kingdom?
What do the colors on the flag of United Kingdom mean?
How the United Kingdom compares
- Area: 242,900 km², ranking 78 of 194 sovereign states by land area.
- Population: 69,487,000, ranking 22 of 193 sovereign states.
- Density: about 286 people per square kilometre.
- Land borders: 1, against an average of 4.1 across the sovereign states that have any.
- Currency reach: 5 other countries and territories use the British pound (see the full list).
Flags with the same colours as the United Kingdom
43 other national flags use exactly the same set of colour families (red, blue, white). Similar colours are the most common reason flags get mistaken for one another, though colour alone says nothing about layout. Showing the first 12.
United Kingdom appears in these lists
Population from the World Bank (SP.POP.TOTL); flag, capital, currency, calling code and ISO data from open datasets. Rankings, density and flag colour matches are computed from that same dataset. Full sources and vintage on the data page. Last updated . Report a correction.