The map above shows Illinois and Queensland side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Illinois vs Queensland Geography
Land area: Illinois has a land area of 55,513 square miles (143,778 km²), while Queensland has 668,207 square miles (1,730,648 km²). Queensland's land area is 12.0 times larger than Illinois'.
Total area: Illinois: 57,913 square miles (149,995 km²) vs Queensland: 668,207 square miles (1,730,648 km²), including inland and coastal water. Queensland's total area is 11.5 times larger than Illinois'.
Length: Illinois is 390 miles (628 km) long from north to south; Queensland is 1,398 miles (2,251 km). Queensland's north-south length is 3.6 times (258%) longer than Illinois'.
Width: Illinois spans 283 miles (456 km) east to west; Queensland spans 1,272 miles (2,048 km). Queensland's east-west width is 4.5 times (349%) wider than Illinois'.
Highest point: Illinois's highest point is Charles Mound at 1,232 feet (376 m); Queensland's is Mount Bartle Frere at 5,285 feet (1,611 m). Mount Bartle Frere is 4,053 feet higher than Charles Mound.
Lowest point: Illinois's lowest point is Mississippi River at 292 feet; Queensland's is Pacific Ocean at 0 feet. Queensland's lowest point is 292 feet lower.
Illinois vs Queensland Population and History
Population: Illinois has a population of 12,710,158 (2024), while Queensland has 5,692,642 (2025). Illinois' population is 2.2 times (123%) larger than Queensland's.
Population density: Illinois: 229.0 people per square mile vs Queensland: 8.5. Illinois' population density is 26.9 times higher than Queensland's.
Largest metro area: Illinois's largest metropolitan area is Chicago-Naperville-Elgin, IL-IN metro area (9,408,576 people) vs Queensland's Greater Brisbane (2,833,524). Chicago-Naperville-Elgin, IL-IN metro area's population is 3.3 times (232%) larger than Greater Brisbane's.
History: Illinois: Admitted to the Union on December 3, 1818, as the 21st state. Queensland: Became an Australian state at Federation on January 1, 1901; separated from New South Wales in 1859. In its current form, Illinois is the older of the two by 83 years.
Illinois vs Queensland Economy
GDP: Illinois's GDP is $1,148.1 billion (2024) vs Queensland's $345.6 billion. Illinois' economic output is 3.3 times (232%) larger than Queensland's.
GDP per capita: Illinois: $90,330 per person vs Queensland: $60,710. Illinois' GDP per capita is 1.5 times (49%) higher than Queensland's.
Official Websites
Illinois official website · Queensland official website
More Size Comparisons
All Illinois size comparisons · All Queensland 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.