The map above shows District of Columbia and Ireland side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
District of Columbia vs Ireland Geography
Land area: District of Columbia has a land area of 61 square miles (158 km²), while Ireland has 26,596 square miles (68,883 km²). Ireland's land area is 436.0 times larger than District of Columbia's.
Total area: District of Columbia: 68 square miles (177 km²) vs Ireland: 27,133 square miles (70,273 km²), including inland and coastal water. Ireland's total area is 397.0 times larger than District of Columbia's.
Length: District of Columbia is 13 miles (22 km) long from north to south; Ireland is 287 miles (462 km). Ireland's north-south length is 22.1 times longer than District of Columbia's.
Width: District of Columbia spans 12 miles (19 km) east to west; Ireland spans 191 miles (308 km). Ireland's east-west width is 15.9 times wider than District of Columbia's.
Highest point: District of Columbia's highest point is Fort Reno at 429 feet (131 m); Ireland's is Carrauntoohil at 3,406 feet (1,038 m). Carrauntoohil is 2,977 feet higher than Fort Reno.
Lowest point: District of Columbia's lowest point is Potomac River at 0 feet; Ireland's is Atlantic Ocean at 0 feet. Both lowest points are at or near sea level.
District of Columbia vs Ireland Population and History
Population: District of Columbia has a population of 702,250 (2024), while Ireland has 5,525,600 (2026). Ireland's population is 7.9 times (687%) larger than District of Columbia's.
Population density: District of Columbia: 11,493.5 people per square mile vs Ireland: 207.8. District of Columbia's population density is 55.3 times higher than Ireland's.
Biggest city: District of Columbia's biggest city is Washington with 702,250 people; Ireland's is Dublin with 592,713. Washington's population is 1.2 times (18%) larger than Dublin's.
Largest metro area: District of Columbia's largest metropolitan area is Washington-Arlington-Alexandria, DC-VA-MD-WV metro area (6,436,489 people) vs Ireland's Greater Dublin Area (2,082,605). Washington-Arlington-Alexandria, DC-VA-MD-WV metro area's population is 3.1 times (209%) larger than Greater Dublin Area's.
History: District of Columbia: The federal district, established by the Residence Act on July 16, 1790; not a state. Ireland: Independent since December 6, 1922, as the Irish Free State; a republic since 1949. In its current form, District of Columbia is the older of the two by 132 years.
District of Columbia vs Ireland Economy
GDP: District of Columbia's GDP is $184.3 billion (2024) vs Ireland's $721.7 billion. Ireland's economic output is 3.9 times (292%) larger than District of Columbia's.
GDP per capita: District of Columbia: $262,439 per person vs Ireland: $131,593. District of Columbia's GDP per capita is 2.0 times (99%) higher than Ireland's.
Average income: District of Columbia: $111,185 vs Ireland: $87,360 average income per person (per capita personal income). District of Columbia's average income is 1.3 times (27%) higher than Ireland's.
Official Websites
District of Columbia official website · Ireland official website
More Size Comparisons
All District of Columbia 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.