The map above shows Idaho and Ireland side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Idaho vs Ireland Geography
Land area: Idaho has a land area of 82,645 square miles (214,051 km²), while Ireland has 26,596 square miles (68,883 km²). Idaho's land area is 3.1 times (211%) larger than Ireland's.
Total area: Idaho: 83,569 square miles (216,441 km²) vs Ireland: 27,133 square miles (70,273 km²), including inland and coastal water. Idaho's total area is 3.1 times (208%) larger than Ireland's.
Length: Idaho is 483 miles (778 km) long from north to south; Ireland is 287 miles (462 km). Idaho's north-south length is 1.7 times (68%) longer than Ireland's.
Width: Idaho spans 352 miles (566 km) east to west; Ireland spans 191 miles (308 km). Idaho's east-west width is 1.8 times (84%) wider than Ireland's.
Highest point: Idaho's highest point is Borah Peak at 12,631 feet (3,850 m); Ireland's is Carrauntoohil at 3,406 feet (1,038 m). Borah Peak is 9,225 feet higher than Carrauntoohil.
Lowest point: Idaho's lowest point is Snake River at 718 feet; Ireland's is Atlantic Ocean at 0 feet. Ireland's lowest point is 718 feet lower.
Idaho vs Ireland Population and History
Population: Idaho has a population of 2,001,619 (2024), while Ireland has 5,525,600 (2026). Ireland's population is 2.8 times (176%) larger than Idaho's.
Population density: Idaho: 24.2 people per square mile vs Ireland: 207.8. Ireland's population density is 8.6 times (759%) higher than Idaho's.
Biggest city: Idaho's biggest city is Boise with 237,963 people; Ireland's is Dublin with 592,713. Dublin's population is 2.5 times (149%) larger than Boise's.
Largest metro area: Idaho's largest metropolitan area is Boise City, ID metro area (845,877 people) vs Ireland's Greater Dublin Area (2,082,605). Greater Dublin Area's population is 2.5 times (146%) larger than Boise City, ID metro area's.
History: Idaho: Admitted to the Union on July 3, 1890, as the 43rd state. Ireland: Independent since December 6, 1922, as the Irish Free State; a republic since 1949. In its current form, Idaho is the older of the two by 32 years.
Idaho vs Ireland Economy
GDP: Idaho's GDP is $129.0 billion (2024) vs Ireland's $721.7 billion. Ireland's economic output is 5.6 times (459%) larger than Idaho's.
GDP per capita: Idaho: $64,457 per person vs Ireland: $131,593. Ireland's GDP per capita is 2.0 times (104%) higher than Idaho's.
Average income: Idaho: $62,323 vs Ireland: $87,360 average income per person (per capita personal income). Ireland's average income is 1.4 times (40%) higher than Idaho's.
Official Websites
Idaho official website · Ireland official website
More Size Comparisons
All Idaho 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.