The map above shows Ireland and United Kingdom side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Ireland vs United Kingdom Geography
Land area
- Ireland has a land area of 26,596 square miles (68,883 km²), while United Kingdom has 93,410 square miles (241,930 km²).
- United Kingdom's land area is 3.5 times (251%) larger than Ireland's.
Total area
- Ireland: 27,133 square miles (70,273 km²) vs United Kingdom: 94,058 square miles (243,610 km²), including inland and coastal water.
- United Kingdom's total area is 3.5 times (247%) larger than Ireland's.
Length
- Ireland is 287 miles (462 km) long from north to south; United Kingdom is 747 miles (1,202 km).
- United Kingdom's north-south length is 2.6 times (160%) longer than Ireland's.
Width
- Ireland spans 191 miles (308 km) east to west; United Kingdom spans 429 miles (690 km).
- United Kingdom's east-west width is 2.2 times (125%) wider than Ireland's.
Highest point
- Ireland's highest point is Carrauntoohil at 3,406 feet (1,038 m); United Kingdom's is Ben Nevis at 4,413 feet (1,345 m).
- Ben Nevis is 1,007 feet higher than Carrauntoohil.
Lowest point
- Ireland's lowest point is Atlantic Ocean at 0 feet; United Kingdom's is The Fens (Holme Fen) at -10 feet.
- United Kingdom's lowest point is 10 feet lower.
Ireland vs United Kingdom Population and History
Population
- Ireland has a population of 5,525,600 (2026), while United Kingdom has 69,487,000 (2025).
- United Kingdom's population is 12.6 times larger than Ireland's.
Population density
- Ireland: 207.8 people per square mile vs United Kingdom: 743.9.
- United Kingdom's population density is 3.6 times (258%) higher than Ireland's.
Biggest city
- Ireland's biggest city is Dublin with 592,713 people; United Kingdom's is London with 8,825,001.
- London's population is 14.9 times larger than Dublin's.
Largest metro area
- Ireland's largest metropolitan area is Greater Dublin Area (2,082,605 people) vs United Kingdom's London (10,416,420).
- London's population is 5.0 times (400%) larger than Greater Dublin Area's.
History
- Ireland: Independent since December 6, 1922, as the Irish Free State; a republic since 1949.
- United Kingdom: Formed as the United Kingdom of Great Britain and Ireland on January 1, 1801; took its current form in 1922.
- In its current form, United Kingdom is the older of the two by 121 years.
Ireland vs United Kingdom Economy
GDP
- Ireland's GDP is $721.7 billion (2025) vs United Kingdom's $4,002.6 billion.
- United Kingdom's economic output is 5.5 times (455%) larger than Ireland's.
GDP per capita
- Ireland: $131,593 per person vs United Kingdom: $57,602.
- Ireland's GDP per capita is 2.3 times (128%) higher than United Kingdom's.
Average income
- Ireland: $87,360 vs United Kingdom: $54,550 average income per person (per capita personal income).
- Ireland's average income is 1.6 times (60%) higher than United Kingdom's.
Official Websites
Ireland official website · United Kingdom official website
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More Size Comparisons
All Ireland size comparisons · All United Kingdom size comparisons
Area, elevation and boundary figures come from official national statistics and US Census Bureau and Natural Earth boundary data; US state population, economic, county and tax figures come from the US Census Bureau, the Bureau of Economic Analysis and the Tax Foundation. Figures are rounded and for general reference.