The map above shows United States and Northern Ireland side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
United States vs Northern Ireland Geography
Land area
- United States has a land area of 3,533,467 square miles (9,151,637 km²), while Northern Ireland has 5,236 square miles (13,562 km²).
- United States' land area is 674.8 times larger than Northern Ireland's.
Total area
- United States: 3,802,784 square miles (9,849,165 km²) vs Northern Ireland: 5,456 square miles (14,130 km²), including inland and coastal water.
- United States' total area is 697.0 times larger than Northern Ireland's.
Length
- United States is 3,628 miles (5,839 km) long from north to south; Northern Ireland is 83 miles (134 km).
- United States' north-south length is 43.7 times longer than Northern Ireland's.
Width
- United States spans 4,824 miles (7,763 km) east to west; Northern Ireland spans 107 miles (173 km).
- United States' east-west width is 45.1 times wider than Northern Ireland's.
Highest point
- United States's highest point is Denali at 20,308 feet (6,190 m); Northern Ireland's is Slieve Donard at 2,789 feet (850 m).
- Denali is 17,519 feet higher than Slieve Donard.
Lowest point
- United States's lowest point is Death Valley at -279 feet; Northern Ireland's is Irish Sea at 0 feet.
- United States's lowest point is 279 feet lower.
United States vs Northern Ireland Population and History
Population
- United States has a population of 340,110,988 (2024), while Northern Ireland has 1,905,000 (2022).
- United States' population is 178.5 times larger than Northern Ireland's.
Population density
- United States: 96.3 people per square mile vs Northern Ireland: 363.8.
- Northern Ireland's population density is 3.8 times (278%) higher than United States'.
Biggest city
- United States's biggest city is New York with 8,478,072 people; Northern Ireland's is Belfast with 348,005.
- New York's population is 24.4 times larger than Belfast's.
History
- United States: Declared independence on July 4, 1776.
- Northern Ireland: A country within the United Kingdom; created by the partition of Ireland on May 3, 1921.
- In its current form, United States is the older of the two by 145 years.
United States vs Northern Ireland Economy
GDP
- United States's GDP is $30,769.7 billion (2025) vs Northern Ireland's $58.8 billion.
- United States' economic output is 523.3 times larger than Northern Ireland's.
GDP per capita
- United States: $89,599 per person vs Northern Ireland: $30,686.
- United States' GDP per capita is 2.9 times (192%) higher than Northern Ireland's.
Official Websites
United States official website · Northern Ireland official website
Download the United States vs Northern Ireland Size Comparison Map for free
To download the map, right-click the image above (or press and hold on a phone or tablet) and choose Save image as. The map is free to use anywhere, including on your own website or in print, as long as you credit it with a link back to this page or to BrilliantMaps.com.
More Size Comparisons
All United States size comparisons · All Northern Ireland 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.