The map above shows Massachusetts and Ireland side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Massachusetts vs Ireland Geography
Land area: Massachusetts has a land area of 7,801 square miles (20,204 km²), while Ireland has 26,596 square miles (68,883 km²). Ireland's land area is 3.4 times (241%) larger than Massachusetts'.
Total area: Massachusetts: 10,554 square miles (27,335 km²) vs Ireland: 27,133 square miles (70,273 km²), including inland and coastal water. Ireland's total area is 2.6 times (157%) larger than Massachusetts'.
Length: Massachusetts is 123 miles (198 km) long from north to south; Ireland is 287 miles (462 km). Ireland's north-south length is 2.3 times (133%) longer than Massachusetts'.
Width: Massachusetts spans 185 miles (297 km) east to west; Ireland spans 191 miles (308 km). Massachusetts and Ireland have about the same east-west width.
Highest point: Massachusetts's highest point is Mount Greylock at 3,489 feet (1,063 m); Ireland's is Carrauntoohil at 3,406 feet (1,038 m). Mount Greylock is 83 feet higher than Carrauntoohil.
Lowest point: Massachusetts's lowest point is Atlantic Ocean at 0 feet; Ireland's is Atlantic Ocean at 0 feet. Both lowest points are at or near sea level.
Massachusetts vs Ireland Population and History
Population: Massachusetts has a population of 7,136,171 (2024), while Ireland has 5,525,600 (2026). Massachusetts' population is 1.3 times (29%) larger than Ireland's.
Population density: Massachusetts: 914.8 people per square mile vs Ireland: 207.8. Massachusetts' population density is 4.4 times (340%) higher than Ireland's.
Biggest city: Massachusetts's biggest city is Boston with 673,458 people; Ireland's is Dublin with 592,713. Boston's population is 1.1 times (14%) larger than Dublin's.
Largest metro area: Massachusetts's largest metropolitan area is Boston-Cambridge-Newton, MA-NH metro area (5,025,517 people) vs Ireland's Greater Dublin Area (2,082,605). Boston-Cambridge-Newton, MA-NH metro area's population is 2.4 times (141%) larger than Greater Dublin Area's.
History: Massachusetts: Admitted to the Union on February 6, 1788, as the 6th state. Ireland: Independent since December 6, 1922, as the Irish Free State; a republic since 1949. In its current form, Massachusetts is the older of the two by 134 years.
Massachusetts vs Ireland Economy
GDP: Massachusetts's GDP is $778.5 billion (2024) vs Ireland's $721.7 billion. Massachusetts' economic output is 1.1 times (8%) larger than Ireland's.
GDP per capita: Massachusetts: $109,095 per person vs Ireland: $131,593. Ireland's GDP per capita is 1.2 times (21%) higher than Massachusetts'.
Average income: Massachusetts: $93,607 vs Ireland: $87,360 average income per person (per capita personal income). Massachusetts' average income is 1.1 times (7%) higher than Ireland's.
Official Websites
Massachusetts official website · Ireland official website
More Size Comparisons
All Massachusetts 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.