The map above shows District of Columbia and Northern Ireland side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
District of Columbia vs Northern Ireland Geography
Land area
- District of Columbia has a land area of 61 square miles (158 km²), while Northern Ireland has 5,236 square miles (13,562 km²).
- Northern Ireland's land area is 85.8 times larger than District of Columbia's.
Total area
- District of Columbia: 68 square miles (177 km²) vs Northern Ireland: 5,456 square miles (14,130 km²), including inland and coastal water.
- Northern Ireland's total area is 79.8 times larger than District of Columbia's.
Length
- District of Columbia is 13 miles (22 km) long from north to south; Northern Ireland is 83 miles (134 km).
- Northern Ireland's north-south length is 6.4 times (538%) longer than District of Columbia's.
Width
- District of Columbia spans 12 miles (19 km) east to west; Northern Ireland spans 107 miles (173 km).
- Northern Ireland's east-west width is 8.9 times (792%) wider than District of Columbia's.
Highest point
- District of Columbia's highest point is Fort Reno at 429 feet (131 m); Northern Ireland's is Slieve Donard at 2,789 feet (850 m).
- Slieve Donard is 2,360 feet higher than Fort Reno.
Lowest point
- District of Columbia's lowest point is Potomac River at 0 feet; Northern Ireland's is Irish Sea at 0 feet.
- Both lowest points are at or near sea level.
District of Columbia vs Northern Ireland Population and History
Population
- District of Columbia has a population of 702,250 (2024), while Northern Ireland has 1,905,000 (2022).
- Northern Ireland's population is 2.7 times (171%) larger than District of Columbia's.
Population density
- District of Columbia: 11,493.5 people per square mile vs Northern Ireland: 363.8.
- District of Columbia's population density is 31.6 times higher than Northern Ireland's.
Biggest city
- District of Columbia's biggest city is Washington with 702,250 people; Northern Ireland's is Belfast with 348,005.
- Washington's population is 2.0 times (102%) larger than Belfast's.
History
- District of Columbia: The federal district, established by the Residence Act on July 16, 1790; not a state.
- Northern Ireland: A country within the United Kingdom; created by the partition of Ireland on May 3, 1921.
- In its current form, District of Columbia is the older of the two by 131 years.
District of Columbia vs Northern Ireland Economy
GDP
- District of Columbia's GDP is $184.3 billion (2024) vs Northern Ireland's $58.8 billion.
- District of Columbia's economic output is 3.1 times (213%) larger than Northern Ireland's.
GDP per capita
- District of Columbia: $262,439 per person vs Northern Ireland: $30,686.
- District of Columbia's GDP per capita is 8.6 times (755%) higher than Northern Ireland's.
Official Websites
District of Columbia official website · Northern Ireland official website
Download the District of Columbia vs Northern Ireland Size Comparison Map for free
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More Size Comparisons
All District of Columbia 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.