The map above shows Missouri and Ireland side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Missouri vs Ireland Geography
Land area: Missouri has a land area of 68,746 square miles (178,052 km²), while Ireland has 26,596 square miles (68,883 km²). Missouri's land area is 2.6 times (158%) larger than Ireland's.
Total area: Missouri: 69,707 square miles (180,540 km²) vs Ireland: 27,133 square miles (70,273 km²), including inland and coastal water. Missouri's total area is 2.6 times (157%) larger than Ireland's.
Length: Missouri is 328 miles (529 km) long from north to south; Ireland is 287 miles (462 km). Missouri's north-south length is 1.1 times (14%) longer than Ireland's.
Width: Missouri spans 437 miles (703 km) east to west; Ireland spans 191 miles (308 km). Missouri's east-west width is 2.3 times (129%) wider than Ireland's.
Highest point: Missouri's highest point is Taum Sauk Mountain at 1,771 feet (540 m); Ireland's is Carrauntoohil at 3,406 feet (1,038 m). Carrauntoohil is 1,635 feet higher than Taum Sauk Mountain.
Lowest point: Missouri's lowest point is St. Francis River at 230 feet; Ireland's is Atlantic Ocean at 0 feet. Ireland's lowest point is 230 feet lower.
Missouri vs Ireland Population and History
Population: Missouri has a population of 6,245,466 (2024), while Ireland has 5,525,600 (2026). Missouri's population is 1.1 times (13%) larger than Ireland's.
Population density: Missouri: 90.8 people per square mile vs Ireland: 207.8. Ireland's population density is 2.3 times (129%) higher than Missouri's.
Biggest city: Missouri's biggest city is Kansas City with 516,032 people; Ireland's is Dublin with 592,713. Dublin's population is 1.1 times (15%) larger than Kansas City's.
Largest metro area: Missouri's largest metropolitan area is St. Louis, MO-IL metro area (2,811,927 people) vs Ireland's Greater Dublin Area (2,082,605). St. Louis, MO-IL metro area's population is 1.4 times (35%) larger than Greater Dublin Area's.
History: Missouri: Admitted to the Union on August 10, 1821, as the 24th state. Ireland: Independent since December 6, 1922, as the Irish Free State; a republic since 1949. In its current form, Missouri is the older of the two by 101 years.
Missouri vs Ireland Economy
GDP: Missouri's GDP is $448.7 billion (2024) vs Ireland's $721.7 billion. Ireland's economic output is 1.6 times (61%) larger than Missouri's.
GDP per capita: Missouri: $71,846 per person vs Ireland: $131,593. Ireland's GDP per capita is 1.8 times (83%) higher than Missouri's.
Average income: Missouri: $64,920 vs Ireland: $87,360 average income per person (per capita personal income). Ireland's average income is 1.3 times (35%) higher than Missouri's.
Official Websites
Missouri official website · Ireland official website
More Size Comparisons
All Missouri size comparisons · All 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.