The map above shows Colorado and Northern Ireland side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Colorado vs Northern Ireland Geography
Land area: Colorado has a land area of 103,637 square miles (268,419 km²), while Northern Ireland has 5,236 square miles (13,562 km²). Colorado's land area is 19.8 times larger than Northern Ireland's.
Total area: Colorado: 104,095 square miles (269,605 km²) vs Northern Ireland: 5,456 square miles (14,130 km²), including inland and coastal water. Colorado's total area is 19.1 times larger than Northern Ireland's.
Length: Colorado is 467 miles (751 km) long from north to south; Northern Ireland is 83 miles (134 km). Colorado's north-south length is 5.6 times (463%) longer than Northern Ireland's.
Width: Colorado spans 387 miles (622 km) east to west; Northern Ireland spans 107 miles (173 km). Colorado's east-west width is 3.6 times (262%) wider than Northern Ireland's.
Highest point: Colorado's highest point is Mount Elbert at 14,422 feet (4,396 m); Northern Ireland's is Slieve Donard at 2,789 feet (850 m). Mount Elbert is 11,633 feet higher than Slieve Donard.
Lowest point: Colorado's lowest point is Arikaree River at 3,326 feet; Northern Ireland's is Irish Sea at 0 feet. Northern Ireland's lowest point is 3,326 feet lower.
Colorado vs Northern Ireland Population and History
Population: Colorado has a population of 5,957,493 (2024), while Northern Ireland has 1,905,000 (2022). Colorado's population is 3.1 times (213%) larger than Northern Ireland's.
Population density: Colorado: 57.5 people per square mile vs Northern Ireland: 363.8. Northern Ireland's population density is 6.3 times (533%) higher than Colorado's.
Biggest city: Colorado's biggest city is Denver with 729,019 people; Northern Ireland's is Belfast with 348,005. Denver's population is 2.1 times (109%) larger than Belfast's.
History: Colorado: Admitted to the Union on August 1, 1876, as the 38th state. Northern Ireland: A country within the United Kingdom; created by the partition of Ireland on May 3, 1921. In its current form, Colorado is the older of the two by 45 years.
Colorado vs Northern Ireland Economy
GDP: Colorado's GDP is $557.6 billion (2024) vs Northern Ireland's $58.8 billion. Colorado's economic output is 9.5 times (848%) larger than Northern Ireland's.
GDP per capita: Colorado: $93,602 per person vs Northern Ireland: $30,686. Colorado's GDP per capita is 3.1 times (205%) higher than Northern Ireland's.
Official Websites
Colorado official website · Northern Ireland official website
More Size Comparisons
All Colorado 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.