The map above shows Delaware and Northern Ireland side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Delaware vs Northern Ireland Geography
Land area: Delaware has a land area of 1,949 square miles (5,047 km²), while Northern Ireland has 5,236 square miles (13,562 km²). Northern Ireland's land area is 2.7 times (169%) larger than Delaware's.
Total area: Delaware: 2,489 square miles (6,446 km²) vs Northern Ireland: 5,456 square miles (14,130 km²), including inland and coastal water. Northern Ireland's total area is 2.2 times (119%) larger than Delaware's.
Length: Delaware is 98 miles (158 km) long from north to south; Northern Ireland is 83 miles (134 km). Delaware's north-south length is 1.2 times (18%) longer than Northern Ireland's.
Width: Delaware spans 96 miles (155 km) east to west; Northern Ireland spans 107 miles (173 km). Northern Ireland's east-west width is 1.1 times (11%) wider than Delaware's.
Highest point: Delaware's highest point is Ebright Azimuth at 450 feet (137 m); Northern Ireland's is Slieve Donard at 2,789 feet (850 m). Slieve Donard is 2,339 feet higher than Ebright Azimuth.
Lowest point: Delaware's lowest point is Atlantic Ocean at 0 feet; Northern Ireland's is Irish Sea at 0 feet. Both lowest points are at or near sea level.
Delaware vs Northern Ireland Population and History
Population: Delaware has a population of 1,051,917 (2024), while Northern Ireland has 1,905,000 (2022). Northern Ireland's population is 1.8 times (81%) larger than Delaware's.
Population density: Delaware: 539.9 people per square mile vs Northern Ireland: 363.8. Delaware's population density is 1.5 times (48%) higher than Northern Ireland's.
Biggest city: Delaware's biggest city is Wilmington with 73,176 people; Northern Ireland's is Belfast with 348,005. Belfast's population is 4.8 times (376%) larger than Wilmington's.
History: Delaware: Admitted to the Union on December 7, 1787, as the 1st state. Northern Ireland: A country within the United Kingdom; created by the partition of Ireland on May 3, 1921. In its current form, Delaware is the older of the two by 134 years.
Delaware vs Northern Ireland Economy
GDP: Delaware's GDP is $111.0 billion (2024) vs Northern Ireland's $58.8 billion. Delaware's economic output is 1.9 times (89%) larger than Northern Ireland's.
GDP per capita: Delaware: $105,495 per person vs Northern Ireland: $30,686. Delaware's GDP per capita is 3.4 times (244%) higher than Northern Ireland's.
Official Websites
Delaware official website · Northern Ireland official website
More Size Comparisons
All Delaware 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.