The map above shows Connecticut and United Kingdom side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Connecticut vs United Kingdom Geography
Land area: Connecticut has a land area of 4,843 square miles (12,542 km²), while United Kingdom has 93,410 square miles (241,930 km²). United Kingdom's land area is 19.3 times larger than Connecticut's.
Total area: Connecticut: 5,544 square miles (14,358 km²) vs United Kingdom: 94,058 square miles (243,610 km²), including inland and coastal water. United Kingdom's total area is 17.0 times larger than Connecticut's.
Length: Connecticut is 73 miles (118 km) long from north to south; United Kingdom is 747 miles (1,202 km). United Kingdom's north-south length is 10.2 times longer than Connecticut's.
Width: Connecticut spans 104 miles (167 km) east to west; United Kingdom spans 429 miles (690 km). United Kingdom's east-west width is 4.1 times (313%) wider than Connecticut's.
Highest point: Connecticut's highest point is Mount Frissell (south slope) at 2,376 feet (724 m); United Kingdom's is Ben Nevis at 4,413 feet (1,345 m). Ben Nevis is 2,037 feet higher than Mount Frissell (south slope).
Lowest point: Connecticut's lowest point is Long Island Sound at 0 feet; United Kingdom's is The Fens (Holme Fen) at -10 feet. United Kingdom's lowest point is 10 feet lower.
Connecticut vs United Kingdom Population and History
Population: Connecticut has a population of 3,675,069 (2024), while United Kingdom has 69,487,000 (2025). United Kingdom's population is 18.9 times larger than Connecticut's.
Population density: Connecticut: 758.9 people per square mile vs United Kingdom: 743.9. Connecticut and United Kingdom have about the same population density.
Biggest city: Connecticut's biggest city is Bridgeport with 151,599 people; United Kingdom's is London with 8,825,001. London's population is 58.2 times larger than Bridgeport's.
Largest metro area: Connecticut's largest metropolitan area is Hartford-West Hartford-East Hartford, CT metro area (1,169,048 people) vs United Kingdom's London (10,416,420). London's population is 8.9 times (791%) larger than Hartford-West Hartford-East Hartford, CT metro area's.
History: Connecticut: Admitted to the Union on January 9, 1788, as the 5th state. United Kingdom: Formed as the United Kingdom of Great Britain and Ireland on January 1, 1801; took its current form in 1922. In its current form, Connecticut is the older of the two by 13 years.
Connecticut vs United Kingdom Economy
GDP: Connecticut's GDP is $356.8 billion (2024) vs United Kingdom's $4,002.6 billion. United Kingdom's economic output is 11.2 times larger than Connecticut's.
GDP per capita: Connecticut: $97,096 per person vs United Kingdom: $57,602. Connecticut's GDP per capita is 1.7 times (69%) higher than United Kingdom's.
Average income: Connecticut: $95,067 vs United Kingdom: $54,550 average income per person (per capita personal income). Connecticut's average income is 1.7 times (74%) higher than United Kingdom's.
Official Websites
Connecticut official website · United Kingdom official website
More Size Comparisons
All Connecticut size comparisons · All United Kingdom 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.