The map above shows Idaho and Northern Territory side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Idaho vs Northern Territory Geography
Land area: Idaho has a land area of 82,645 square miles (214,051 km²), while Northern Territory has 520,902 square miles (1,349,129 km²). Northern Territory's land area is 6.3 times (530%) larger than Idaho's.
Total area: Idaho: 83,569 square miles (216,441 km²) vs Northern Territory: 520,902 square miles (1,349,129 km²), including inland and coastal water. Northern Territory's total area is 6.2 times (523%) larger than Idaho's.
Length: Idaho is 483 miles (778 km) long from north to south; Northern Territory is 1,092 miles (1,758 km). Northern Territory's north-south length is 2.3 times (126%) longer than Idaho's.
Width: Idaho spans 352 miles (566 km) east to west; Northern Territory spans 610 miles (981 km). Northern Territory's east-west width is 1.7 times (73%) wider than Idaho's.
Highest point: Idaho's highest point is Borah Peak at 12,631 feet (3,850 m); Northern Territory's is Mount Zeil at 5,023 feet (1,531 m). Borah Peak is 7,608 feet higher than Mount Zeil.
Lowest point: Idaho's lowest point is Snake River at 718 feet; Northern Territory's is Timor Sea at 0 feet. Northern Territory's lowest point is 718 feet lower.
Idaho vs Northern Territory Population and History
Population: Idaho has a population of 2,001,619 (2024), while Northern Territory has 265,457 (2025). Idaho's population is 7.5 times (654%) larger than Northern Territory's.
Population density: Idaho: 24.2 people per square mile vs Northern Territory: 0.5. Idaho's population density is 48.4 times higher than Northern Territory's.
Largest metro area: Idaho's largest metropolitan area is Boise City, ID metro area (845,877 people) vs Northern Territory's Greater Darwin (159,284). Boise City, ID metro area's population is 5.3 times (431%) larger than Greater Darwin's.
History: Idaho: Admitted to the Union on July 3, 1890, as the 43rd state. Northern Territory: Became a federal territory on January 1, 1911; self-governing since 1978. In its current form, Idaho is the older of the two by 21 years.
Idaho vs Northern Territory Economy
GDP: Idaho's GDP is $129.0 billion (2024) vs Northern Territory's $22.4 billion. Idaho's economic output is 5.8 times (476%) larger than Northern Territory's.
GDP per capita: Idaho: $64,457 per person vs Northern Territory: $84,383. Northern Territory's GDP per capita is 1.3 times (31%) higher than Idaho's.
Official Websites
Idaho official website · Northern Territory official website
More Size Comparisons
All Idaho size comparisons · All Northern 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.