The map above shows Kentucky and New South Wales side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Kentucky vs New South Wales Geography
Land area: Kentucky has a land area of 39,485 square miles (102,267 km²), while New South Wales has 309,130 square miles (800,642 km²). New South Wales' land area is 7.8 times (683%) larger than Kentucky's.
Total area: Kentucky: 40,406 square miles (104,651 km²) vs New South Wales: 309,130 square miles (800,642 km²), including inland and coastal water. New South Wales' total area is 7.7 times (665%) larger than Kentucky's.
Length: Kentucky is 257 miles (414 km) long from north to south; New South Wales is 678 miles (1,092 km). New South Wales' north-south length is 2.6 times (164%) longer than Kentucky's.
Width: Kentucky spans 418 miles (672 km) east to west; New South Wales spans 831 miles (1,338 km). New South Wales' east-west width is 2.0 times (99%) wider than Kentucky's.
Highest point: Kentucky's highest point is Black Mountain at 4,134 feet (1,260 m); New South Wales's is Mount Kosciuszko at 7,310 feet (2,228 m). Mount Kosciuszko is 3,176 feet higher than Black Mountain.
Lowest point: Kentucky's lowest point is Mississippi River at 270 feet; New South Wales's is Pacific Ocean at 0 feet. New South Wales's lowest point is 270 feet lower.
Kentucky vs New South Wales Population and History
Population: Kentucky has a population of 4,588,372 (2024), while New South Wales has 8,624,534 (2025). New South Wales' population is 1.9 times (88%) larger than Kentucky's.
Population density: Kentucky: 116.2 people per square mile vs New South Wales: 27.9. Kentucky's population density is 4.2 times (316%) higher than New South Wales'.
Largest metro area: Kentucky's largest metropolitan area is Cincinnati, OH-KY-IN metro area (2,302,815 people) vs New South Wales's Greater Sydney (5,638,830). Greater Sydney's population is 2.4 times (145%) larger than Cincinnati, OH-KY-IN metro area's.
History: Kentucky: Admitted to the Union on June 1, 1792, as the 15th state. New South Wales: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1788. In its current form, Kentucky is the older of the two by 109 years.
Kentucky vs New South Wales Economy
GDP: Kentucky's GDP is $295.4 billion (2024) vs New South Wales's $547.1 billion. New South Wales' economic output is 1.9 times (85%) larger than Kentucky's.
GDP per capita: Kentucky: $64,375 per person vs New South Wales: $63,435. Kentucky and New South Wales have about the same GDP per capita.
Official Websites
Kentucky official website · New South Wales official website
More Size Comparisons
All Kentucky 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.