The map above shows Australian Capital Territory and Northern Ireland side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Australian Capital Territory vs Northern Ireland Geography
Land area
- Australian Capital Territory has a land area of 910 square miles (2,358 km²), while Northern Ireland has 5,236 square miles (13,562 km²).
- Northern Ireland's land area is 5.8 times (475%) larger than Australian Capital Territory's.
Total area
- Australian Capital Territory: 910 square miles (2,358 km²) vs Northern Ireland: 5,456 square miles (14,130 km²), including inland and coastal water.
- Northern Ireland's total area is 6.0 times (499%) larger than Australian Capital Territory's.
Length
- Australian Capital Territory is 54 miles (87 km) long from north to south; Northern Ireland is 83 miles (134 km).
- Northern Ireland's north-south length is 1.5 times (54%) longer than Australian Capital Territory's.
Width
- Australian Capital Territory spans 38 miles (61 km) east to west; Northern Ireland spans 107 miles (173 km).
- Northern Ireland's east-west width is 2.8 times (182%) wider than Australian Capital Territory's.
Highest point
- Australian Capital Territory's highest point is Bimberi Peak at 6,273 feet (1,912 m); Northern Ireland's is Slieve Donard at 2,789 feet (850 m).
- Bimberi Peak is 3,484 feet higher than Slieve Donard.
Lowest point
- Australian Capital Territory's lowest point is Molonglo River at 1,407 feet; Northern Ireland's is Irish Sea at 0 feet.
- Northern Ireland's lowest point is 1,407 feet lower.
Australian Capital Territory vs Northern Ireland Population and History
Population
- Australian Capital Territory has a population of 486,231 (2025), while Northern Ireland has 1,905,000 (2022).
- Northern Ireland's population is 3.9 times (292%) larger than Australian Capital Territory's.
Population density
- Australian Capital Territory: 534.3 people per square mile vs Northern Ireland: 363.8.
- Australian Capital Territory's population density is 1.5 times (47%) higher than Northern Ireland's.
History
- Australian Capital Territory: Established as the Federal Capital Territory on January 1, 1911.
- Northern Ireland: A country within the United Kingdom; created by the partition of Ireland on May 3, 1921.
- In its current form, Australian Capital Territory is the older of the two by 10 years.
Australian Capital Territory vs Northern Ireland Economy
GDP
- Australian Capital Territory's GDP is $38.0 billion (2025) vs Northern Ireland's $58.8 billion.
- Northern Ireland's economic output is 1.5 times (55%) larger than Australian Capital Territory's.
GDP per capita
- Australian Capital Territory: $78,152 per person vs Northern Ireland: $30,686.
- Australian Capital Territory's GDP per capita is 2.5 times (155%) higher than Northern Ireland's.
Official Websites
Australian Capital Territory official website · Northern Ireland official website
Download the Australian Capital Territory vs Northern Ireland Size Comparison Map for free
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More Size Comparisons
All Australian Capital Territory 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.