The map above shows Colorado and New South Wales side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Colorado vs New South Wales Geography
Land area: Colorado has a land area of 103,637 square miles (268,419 km²), while New South Wales has 309,130 square miles (800,642 km²). New South Wales' land area is 3.0 times (198%) larger than Colorado's.
Total area: Colorado: 104,095 square miles (269,605 km²) vs New South Wales: 309,130 square miles (800,642 km²), including inland and coastal water. New South Wales' total area is 3.0 times (197%) larger than Colorado's.
Length: Colorado is 467 miles (751 km) long from north to south; New South Wales is 678 miles (1,092 km). New South Wales' north-south length is 1.5 times (45%) longer than Colorado's.
Width: Colorado spans 387 miles (622 km) east to west; New South Wales spans 831 miles (1,338 km). New South Wales' east-west width is 2.1 times (115%) wider than Colorado's.
Highest point: Colorado's highest point is Mount Elbert at 14,422 feet (4,396 m); New South Wales's is Mount Kosciuszko at 7,310 feet (2,228 m). Mount Elbert is 7,112 feet higher than Mount Kosciuszko.
Lowest point: Colorado's lowest point is Arikaree River at 3,326 feet; New South Wales's is Pacific Ocean at 0 feet. New South Wales's lowest point is 3,326 feet lower.
Colorado vs New South Wales Population and History
Population: Colorado has a population of 5,957,493 (2024), while New South Wales has 8,624,534 (2025). New South Wales' population is 1.4 times (45%) larger than Colorado's.
Population density: Colorado: 57.5 people per square mile vs New South Wales: 27.9. Colorado's population density is 2.1 times (106%) higher than New South Wales'.
Largest metro area: Colorado's largest metropolitan area is Denver-Aurora-Centennial, CO metro area (3,052,498 people) vs New South Wales's Greater Sydney (5,638,830). Greater Sydney's population is 1.8 times (85%) larger than Denver-Aurora-Centennial, CO metro area's.
History: Colorado: Admitted to the Union on August 1, 1876, as the 38th state. New South Wales: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1788. In its current form, Colorado is the older of the two by 25 years.
Colorado vs New South Wales Economy
GDP: Colorado's GDP is $557.6 billion (2024) vs New South Wales's $547.1 billion. Colorado and New South Wales have about the same economic output.
GDP per capita: Colorado: $93,602 per person vs New South Wales: $63,435. Colorado's GDP per capita is 1.5 times (48%) higher than New South Wales'.
Official Websites
Colorado official website · New South Wales official website
More Size Comparisons
All Colorado 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.