The map above shows Idaho and Australian Capital Territory side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Idaho vs Australian Capital Territory Geography
Land area: Idaho has a land area of 82,645 square miles (214,051 km²), while Australian Capital Territory has 910 square miles (2,358 km²). Idaho's land area is 90.8 times larger than Australian Capital Territory's.
Total area: Idaho: 83,569 square miles (216,441 km²) vs Australian Capital Territory: 910 square miles (2,358 km²), including inland and coastal water. Idaho's total area is 91.8 times larger than Australian Capital Territory's.
Length: Idaho is 483 miles (778 km) long from north to south; Australian Capital Territory is 54 miles (87 km). Idaho's north-south length is 8.9 times (794%) longer than Australian Capital Territory's.
Width: Idaho spans 352 miles (566 km) east to west; Australian Capital Territory spans 38 miles (61 km). Idaho's east-west width is 9.3 times (826%) wider than Australian Capital Territory's.
Highest point: Idaho's highest point is Borah Peak at 12,631 feet (3,850 m); Australian Capital Territory's is Bimberi Peak at 6,273 feet (1,912 m). Borah Peak is 6,358 feet higher than Bimberi Peak.
Lowest point: Idaho's lowest point is Snake River at 718 feet; Australian Capital Territory's is Molonglo River at 1,407 feet. Idaho's lowest point is 689 feet lower.
Idaho vs Australian Capital Territory Population and History
Population: Idaho has a population of 2,001,619 (2024), while Australian Capital Territory has 486,231 (2025). Idaho's population is 4.1 times (312%) larger than Australian Capital Territory's.
Population density: Idaho: 24.2 people per square mile vs Australian Capital Territory: 534.3. Australian Capital Territory's population density is 22.1 times higher than Idaho's.
Largest metro area: Idaho's largest metropolitan area is Boise City, ID metro area (845,877 people) vs Australian Capital Territory's Greater Canberra (486,231). Boise City, ID metro area's population is 1.7 times (74%) larger than Greater Canberra's.
History: Idaho: Admitted to the Union on July 3, 1890, as the 43rd state. Australian Capital Territory: Established as the Federal Capital Territory on January 1, 1911. In its current form, Idaho is the older of the two by 21 years.
Idaho vs Australian Capital Territory Economy
GDP: Idaho's GDP is $129.0 billion (2024) vs Australian Capital Territory's $38.0 billion. Idaho's economic output is 3.4 times (239%) larger than Australian Capital Territory's.
GDP per capita: Idaho: $64,457 per person vs Australian Capital Territory: $78,152. Australian Capital Territory's GDP per capita is 1.2 times (21%) higher than Idaho's.
Official Websites
Idaho official website · Australian Capital Territory official website
More Size Comparisons
All Idaho 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.