The map above shows Illinois and Tasmania side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Illinois vs Tasmania Geography
Land area: Illinois has a land area of 55,513 square miles (143,778 km²), while Tasmania has 26,410 square miles (68,401 km²). Illinois' land area is 2.1 times (110%) larger than Tasmania's.
Total area: Illinois: 57,913 square miles (149,995 km²) vs Tasmania: 26,410 square miles (68,401 km²), including inland and coastal water. Illinois' total area is 2.2 times (119%) larger than Tasmania's.
Length: Illinois is 390 miles (628 km) long from north to south; Tasmania is 318 miles (511 km). Illinois' north-south length is 1.2 times (23%) longer than Tasmania's.
Width: Illinois spans 283 miles (456 km) east to west; Tasmania spans 248 miles (399 km). Illinois' east-west width is 1.1 times (14%) wider than Tasmania's.
Highest point: Illinois's highest point is Charles Mound at 1,232 feet (376 m); Tasmania's is Mount Ossa at 5,305 feet (1,617 m). Mount Ossa is 4,073 feet higher than Charles Mound.
Lowest point: Illinois's lowest point is Mississippi River at 292 feet; Tasmania's is Southern Ocean at 0 feet. Tasmania's lowest point is 292 feet lower.
Illinois vs Tasmania Population and History
Population: Illinois has a population of 12,710,158 (2024), while Tasmania has 576,659 (2025). Illinois' population is 22.0 times larger than Tasmania's.
Population density: Illinois: 229.0 people per square mile vs Tasmania: 21.8. Illinois' population density is 10.5 times higher than Tasmania's.
Largest metro area: Illinois's largest metropolitan area is Chicago-Naperville-Elgin, IL-IN metro area (9,408,576 people) vs Tasmania's Greater Hobart (255,250). Chicago-Naperville-Elgin, IL-IN metro area's population is 36.9 times larger than Greater Hobart's.
History: Illinois: Admitted to the Union on December 3, 1818, as the 21st state. Tasmania: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1825. In its current form, Illinois is the older of the two by 83 years.
Illinois vs Tasmania Economy
GDP: Illinois's GDP is $1,148.1 billion (2024) vs Tasmania's $28.3 billion. Illinois' economic output is 40.6 times larger than Tasmania's.
GDP per capita: Illinois: $90,330 per person vs Tasmania: $49,076. Illinois' GDP per capita is 1.8 times (84%) higher than Tasmania's.
Official Websites
Illinois official website · Tasmania official website
More Size Comparisons
All Illinois size comparisons · All Tasmania 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.