The map above shows Montana and New South Wales side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Montana vs New South Wales Geography
Land area: Montana has a land area of 145,550 square miles (376,973 km²), while New South Wales has 309,130 square miles (800,642 km²). New South Wales' land area is 2.1 times (112%) larger than Montana's.
Total area: Montana: 147,043 square miles (380,840 km²) vs New South Wales: 309,130 square miles (800,642 km²), including inland and coastal water. New South Wales' total area is 2.1 times (110%) larger than Montana's.
Length: Montana is 319 miles (514 km) long from north to south; New South Wales is 678 miles (1,092 km). New South Wales' north-south length is 2.1 times (113%) longer than Montana's.
Width: Montana spans 607 miles (976 km) east to west; New South Wales spans 831 miles (1,338 km). New South Wales' east-west width is 1.4 times (37%) wider than Montana's.
Highest point: Montana's highest point is Granite Peak at 12,767 feet (3,891 m); New South Wales's is Mount Kosciuszko at 7,310 feet (2,228 m). Granite Peak is 5,457 feet higher than Mount Kosciuszko.
Lowest point: Montana's lowest point is Kootenai River at 1,805 feet; New South Wales's is Pacific Ocean at 0 feet. New South Wales's lowest point is 1,805 feet lower.
Montana vs New South Wales Population and History
Population: Montana has a population of 1,137,233 (2024), while New South Wales has 8,624,534 (2025). New South Wales' population is 7.6 times (658%) larger than Montana's.
Population density: Montana: 7.8 people per square mile vs New South Wales: 27.9. New South Wales' population density is 3.6 times (258%) higher than Montana's.
Largest metro area: Montana's largest metropolitan area is Billings, MT metro area (192,531 people) vs New South Wales's Greater Sydney (5,638,830). Greater Sydney's population is 29.3 times larger than Billings, MT metro area's.
History: Montana: Admitted to the Union on November 8, 1889, as the 41st state. New South Wales: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1788. In its current form, Montana is the older of the two by 12 years.
Montana vs New South Wales Economy
GDP: Montana's GDP is $78.4 billion (2024) vs New South Wales's $547.1 billion. New South Wales' economic output is 7.0 times (598%) larger than Montana's.
GDP per capita: Montana: $68,975 per person vs New South Wales: $63,435. Montana's GDP per capita is 1.1 times (9%) higher than New South Wales'.
Official Websites
Montana official website · New South Wales official website
More Size Comparisons
All Montana size comparisons · All New South Wales 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.