The map above shows Missouri and Northern Ireland side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Missouri vs Northern Ireland Geography
Land area: Missouri has a land area of 68,746 square miles (178,052 km²), while Northern Ireland has 5,236 square miles (13,562 km²). Missouri's land area is 13.1 times larger than Northern Ireland's.
Total area: Missouri: 69,707 square miles (180,540 km²) vs Northern Ireland: 5,456 square miles (14,130 km²), including inland and coastal water. Missouri's total area is 12.8 times larger than Northern Ireland's.
Length: Missouri is 328 miles (529 km) long from north to south; Northern Ireland is 83 miles (134 km). Missouri's north-south length is 4.0 times (295%) longer than Northern Ireland's.
Width: Missouri spans 437 miles (703 km) east to west; Northern Ireland spans 107 miles (173 km). Missouri's east-west width is 4.1 times (308%) wider than Northern Ireland's.
Highest point: Missouri's highest point is Taum Sauk Mountain at 1,771 feet (540 m); Northern Ireland's is Slieve Donard at 2,789 feet (850 m). Slieve Donard is 1,018 feet higher than Taum Sauk Mountain.
Lowest point: Missouri's lowest point is St. Francis River at 230 feet; Northern Ireland's is Irish Sea at 0 feet. Northern Ireland's lowest point is 230 feet lower.
Missouri vs Northern Ireland Population and History
Population: Missouri has a population of 6,245,466 (2024), while Northern Ireland has 1,905,000 (2022). Missouri's population is 3.3 times (228%) larger than Northern Ireland's.
Population density: Missouri: 90.8 people per square mile vs Northern Ireland: 363.8. Northern Ireland's population density is 4.0 times (301%) higher than Missouri's.
Biggest city: Missouri's biggest city is Kansas City with 516,032 people; Northern Ireland's is Belfast with 348,005. Kansas City's population is 1.5 times (48%) larger than Belfast's.
History: Missouri: Admitted to the Union on August 10, 1821, as the 24th state. Northern Ireland: A country within the United Kingdom; created by the partition of Ireland on May 3, 1921. In its current form, Missouri is the older of the two by 100 years.
Missouri vs Northern Ireland Economy
GDP: Missouri's GDP is $448.7 billion (2024) vs Northern Ireland's $58.8 billion. Missouri's economic output is 7.6 times (663%) larger than Northern Ireland's.
GDP per capita: Missouri: $71,846 per person vs Northern Ireland: $30,686. Missouri's GDP per capita is 2.3 times (134%) higher than Northern Ireland's.
Official Websites
Missouri official website · Northern Ireland official website
More Size Comparisons
All Missouri 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.