The map above shows Connecticut and South Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Connecticut vs South Australia Geography
Land area: Connecticut has a land area of 4,843 square miles (12,542 km²), while South Australia has 380,048 square miles (984,321 km²). South Australia's land area is 78.5 times larger than Connecticut's.
Total area: Connecticut: 5,544 square miles (14,358 km²) vs South Australia: 380,048 square miles (984,321 km²), including inland and coastal water. South Australia's total area is 68.6 times larger than Connecticut's.
Length: Connecticut is 73 miles (118 km) long from north to south; South Australia is 1,078 miles (1,735 km). South Australia's north-south length is 14.8 times longer than Connecticut's.
Width: Connecticut spans 104 miles (167 km) east to west; South Australia spans 825 miles (1,328 km). South Australia's east-west width is 7.9 times (693%) wider than Connecticut's.
Highest point: Connecticut's highest point is Mount Frissell (south slope) at 2,376 feet (724 m); South Australia's is Mount Woodroffe at 4,708 feet (1,435 m). Mount Woodroffe is 2,332 feet higher than Mount Frissell (south slope).
Lowest point: Connecticut's lowest point is Long Island Sound at 0 feet; South Australia's is Lake Eyre at -49 feet. South Australia's lowest point is 49 feet lower.
Connecticut vs South Australia Population and History
Population: Connecticut has a population of 3,675,069 (2024), while South Australia has 1,908,182 (2025). Connecticut's population is 1.9 times (93%) larger than South Australia's.
Population density: Connecticut: 758.9 people per square mile vs South Australia: 5.0. Connecticut's population density is 151.8 times higher than South Australia's.
Largest metro area: Connecticut's largest metropolitan area is Hartford-West Hartford-East Hartford, CT metro area (1,169,048 people) vs South Australia's Greater Adelaide (1,491,015). Greater Adelaide's population is 1.3 times (28%) 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. South Australia: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1836. In its current form, Connecticut is the older of the two by 113 years.
Connecticut vs South Australia Economy
GDP: Connecticut's GDP is $356.8 billion (2024) vs South Australia's $100.2 billion. Connecticut's economic output is 3.6 times (256%) larger than South Australia's.
GDP per capita: Connecticut: $97,096 per person vs South Australia: $52,511. Connecticut's GDP per capita is 1.8 times (85%) higher than South Australia's.
Official Websites
Connecticut official website · South Australia official website
More Size Comparisons
All Connecticut size comparisons · All South Australia 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.