The map above shows Missouri and New South Wales side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Missouri vs New South Wales Geography
Land area: Missouri has a land area of 68,746 square miles (178,052 km²), while New South Wales has 309,130 square miles (800,642 km²). New South Wales' land area is 4.5 times (350%) larger than Missouri's.
Total area: Missouri: 69,707 square miles (180,540 km²) vs New South Wales: 309,130 square miles (800,642 km²), including inland and coastal water. New South Wales' total area is 4.4 times (343%) larger than Missouri's.
Length: Missouri is 328 miles (529 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 (107%) longer than Missouri's.
Width: Missouri spans 437 miles (703 km) east to west; New South Wales spans 831 miles (1,338 km). New South Wales' east-west width is 1.9 times (90%) wider than Missouri's.
Highest point: Missouri's highest point is Taum Sauk Mountain at 1,771 feet (540 m); New South Wales's is Mount Kosciuszko at 7,310 feet (2,228 m). Mount Kosciuszko is 5,539 feet higher than Taum Sauk Mountain.
Lowest point: Missouri's lowest point is St. Francis River at 230 feet; New South Wales's is Pacific Ocean at 0 feet. New South Wales's lowest point is 230 feet lower.
Missouri vs New South Wales Population and History
Population: Missouri has a population of 6,245,466 (2024), while New South Wales has 8,624,534 (2025). New South Wales' population is 1.4 times (38%) larger than Missouri's.
Population density: Missouri: 90.8 people per square mile vs New South Wales: 27.9. Missouri's population density is 3.3 times (225%) higher than New South Wales'.
Largest metro area: Missouri's largest metropolitan area is St. Louis, MO-IL metro area (2,811,927 people) vs New South Wales's Greater Sydney (5,638,830). Greater Sydney's population is 2.0 times (101%) larger than St. Louis, MO-IL metro area's.
History: Missouri: Admitted to the Union on August 10, 1821, as the 24th state. New South Wales: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1788. In its current form, Missouri is the older of the two by 80 years.
Missouri vs New South Wales Economy
GDP: Missouri's GDP is $448.7 billion (2024) vs New South Wales's $547.1 billion. New South Wales' economic output is 1.2 times (22%) larger than Missouri's.
GDP per capita: Missouri: $71,846 per person vs New South Wales: $63,435. Missouri's GDP per capita is 1.1 times (13%) higher than New South Wales'.
Official Websites
Missouri official website · New South Wales official website
More Size Comparisons
All Missouri 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.