The map above shows Connecticut and Northern Ireland side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Connecticut vs Northern Ireland Geography
Land area: Connecticut has a land area of 4,843 square miles (12,542 km²), while Northern Ireland has 5,236 square miles (13,562 km²). Northern Ireland's land area is 1.1 times (8%) larger than Connecticut's.
Total area: Connecticut: 5,544 square miles (14,358 km²) vs Northern Ireland: 5,456 square miles (14,130 km²), including inland and coastal water. Connecticut and Northern Ireland have about the same total area.
Length: Connecticut is 73 miles (118 km) long from north to south; Northern Ireland is 83 miles (134 km). Northern Ireland's north-south length is 1.1 times (14%) longer than Connecticut's.
Width: Connecticut spans 104 miles (167 km) east to west; Northern Ireland spans 107 miles (173 km). Connecticut and Northern Ireland have about the same east-west width.
Highest point: Connecticut's highest point is Mount Frissell (south slope) at 2,376 feet (724 m); Northern Ireland's is Slieve Donard at 2,789 feet (850 m). Slieve Donard is 413 feet higher than Mount Frissell (south slope).
Lowest point: Connecticut's lowest point is Long Island Sound at 0 feet; Northern Ireland's is Irish Sea at 0 feet. Both lowest points are at or near sea level.
Connecticut vs Northern Ireland Population and History
Population: Connecticut has a population of 3,675,069 (2024), while Northern Ireland has 1,905,000 (2022). Connecticut's population is 1.9 times (93%) larger than Northern Ireland's.
Population density: Connecticut: 758.9 people per square mile vs Northern Ireland: 363.8. Connecticut's population density is 2.1 times (109%) higher than Northern Ireland's.
Biggest city: Connecticut's biggest city is Bridgeport with 151,599 people; Northern Ireland's is Belfast with 348,005. Belfast's population is 2.3 times (130%) larger than Bridgeport's.
History: Connecticut: Admitted to the Union on January 9, 1788, as the 5th state. Northern Ireland: A country within the United Kingdom; created by the partition of Ireland on May 3, 1921. In its current form, Connecticut is the older of the two by 133 years.
Connecticut vs Northern Ireland Economy
GDP: Connecticut's GDP is $356.8 billion (2024) vs Northern Ireland's $58.8 billion. Connecticut's economic output is 6.1 times (507%) larger than Northern Ireland's.
GDP per capita: Connecticut: $97,096 per person vs Northern Ireland: $30,686. Connecticut's GDP per capita is 3.2 times (216%) higher than Northern Ireland's.
Official Websites
Connecticut official website · Northern Ireland official website
More Size Comparisons
All Connecticut 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.