The map above shows Northern Mariana Islands and Northern Ireland side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Northern Mariana Islands vs Northern Ireland Geography
Land area: Northern Mariana Islands has a land area of 179 square miles (464 km²), while Northern Ireland has 5,236 square miles (13,562 km²). Northern Ireland's land area is 29.2 times larger than Northern Mariana Islands'.
Total area: Northern Mariana Islands: 179 square miles (464 km²) vs Northern Ireland: 5,456 square miles (14,130 km²), including inland and coastal water. Northern Ireland's total area is 30.5 times larger than Northern Mariana Islands'.
Length: Northern Mariana Islands is 326 miles (524 km) long from north to south; Northern Ireland is 83 miles (134 km). Northern Mariana Islands' north-south length is 3.9 times (293%) longer than Northern Ireland's.
Width: Northern Mariana Islands spans 278 miles (448 km) east to west; Northern Ireland spans 107 miles (173 km). Northern Mariana Islands' east-west width is 2.6 times (160%) wider than Northern Ireland's.
Highest point: Northern Mariana Islands's highest point is Agrihan at 3,166 feet (965 m); Northern Ireland's is Slieve Donard at 2,789 feet (850 m). Agrihan is 377 feet higher than Slieve Donard.
Lowest point: Northern Mariana Islands's lowest point is Pacific Ocean at 0 feet; Northern Ireland's is Irish Sea at 0 feet. Both lowest points are at or near sea level.
Northern Mariana Islands vs Northern Ireland Population and History
Population: Northern Mariana Islands has a population of 47,329 (2020), while Northern Ireland has 1,905,000 (2022). Northern Ireland's population is 40.3 times larger than Northern Mariana Islands'.
Population density: Northern Mariana Islands: 264.4 people per square mile vs Northern Ireland: 363.8. Northern Ireland's population density is 1.4 times (38%) higher than Northern Mariana Islands'.
History: Northern Mariana Islands: A US commonwealth since 1978. Northern Ireland: A country within the United Kingdom; created by the partition of Ireland on May 3, 1921. In its current form, Northern Ireland is the older of the two by 57 years.
Official Websites
Northern Mariana Islands official website · Northern Ireland official website
More Size Comparisons
All Northern Mariana Islands 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.