The map above shows Illinois and Australian Capital Territory side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Illinois vs Australian Capital Territory Geography
Land area
- Illinois has a land area of 55,513 square miles (143,778 km²), while Australian Capital Territory has 910 square miles (2,358 km²).
- Illinois' land area is 61.0 times larger than Australian Capital Territory's.
Total area
- Illinois: 57,913 square miles (149,995 km²) vs Australian Capital Territory: 910 square miles (2,358 km²), including inland and coastal water.
- Illinois' total area is 63.6 times larger than Australian Capital Territory's.
Length
- Illinois is 390 miles (628 km) long from north to south; Australian Capital Territory is 54 miles (87 km).
- Illinois' north-south length is 7.2 times (622%) longer than Australian Capital Territory's.
Width
- Illinois spans 283 miles (456 km) east to west; Australian Capital Territory spans 38 miles (61 km).
- Illinois' east-west width is 7.4 times (645%) wider than Australian Capital Territory's.
Highest point
- Illinois's highest point is Charles Mound at 1,232 feet (376 m); Australian Capital Territory's is Bimberi Peak at 6,273 feet (1,912 m).
- Bimberi Peak is 5,041 feet higher than Charles Mound.
Lowest point
- Illinois's lowest point is Mississippi River at 292 feet; Australian Capital Territory's is Molonglo River at 1,407 feet.
- Illinois's lowest point is 1,115 feet lower.
Illinois vs Australian Capital Territory Population and History
Population
- Illinois has a population of 12,710,158 (2024), while Australian Capital Territory has 486,231 (2025).
- Illinois' population is 26.1 times larger than Australian Capital Territory's.
Population density
- Illinois: 229.0 people per square mile vs Australian Capital Territory: 534.3.
- Australian Capital Territory's population density is 2.3 times (133%) higher than Illinois'.
Largest metro area
- Illinois's largest metropolitan area is Chicago-Naperville-Elgin, IL-IN metro area (9,408,576 people) vs Australian Capital Territory's Greater Canberra (486,231).
- Chicago-Naperville-Elgin, IL-IN metro area's population is 19.4 times larger than Greater Canberra's.
History
- Illinois: Admitted to the Union on December 3, 1818, as the 21st state.
- Australian Capital Territory: Established as the Federal Capital Territory on January 1, 1911.
- In its current form, Illinois is the older of the two by 93 years.
Illinois vs Australian Capital Territory Economy
GDP
- Illinois's GDP is $1,148.1 billion (2024) vs Australian Capital Territory's $38.0 billion.
- Illinois' economic output is 30.2 times larger than Australian Capital Territory's.
GDP per capita
- Illinois: $90,330 per person vs Australian Capital Territory: $78,152.
- Illinois' GDP per capita is 1.2 times (16%) higher than Australian Capital Territory's.
Official Websites
Illinois official website · Australian Capital Territory official website
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More Size Comparisons
All Illinois size comparisons · All Australian Capital Territory 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.