The map above shows Kentucky and Western Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Kentucky vs Western Australia Geography
Land area: Kentucky has a land area of 39,485 square miles (102,267 km²), while Western Australia has 975,685 square miles (2,527,013 km²). Western Australia's land area is 24.7 times larger than Kentucky's.
Total area: Kentucky: 40,406 square miles (104,651 km²) vs Western Australia: 975,685 square miles (2,527,013 km²), including inland and coastal water. Western Australia's total area is 24.1 times larger than Kentucky's.
Length: Kentucky is 257 miles (414 km) long from north to south; Western Australia is 1,590 miles (2,558 km). Western Australia's north-south length is 6.2 times (519%) longer than Kentucky's.
Width: Kentucky spans 418 miles (672 km) east to west; Western Australia spans 1,286 miles (2,069 km). Western Australia's east-west width is 3.1 times (208%) wider than Kentucky's.
Highest point: Kentucky's highest point is Black Mountain at 4,134 feet (1,260 m); Western Australia's is Mount Meharry at 4,098 feet (1,249 m). Black Mountain is 36 feet higher than Mount Meharry.
Lowest point: Kentucky's lowest point is Mississippi River at 270 feet; Western Australia's is Indian Ocean at 0 feet. Western Australia's lowest point is 270 feet lower.
Kentucky vs Western Australia Population and History
Population: Kentucky has a population of 4,588,372 (2024), while Western Australia has 3,061,672 (2025). Kentucky's population is 1.5 times (50%) larger than Western Australia's.
Population density: Kentucky: 116.2 people per square mile vs Western Australia: 3.1. Kentucky's population density is 37.5 times higher than Western Australia's.
Largest metro area: Kentucky's largest metropolitan area is Cincinnati, OH-KY-IN metro area (2,302,815 people) vs Western Australia's Greater Perth (2,452,765). Greater Perth's population is 1.1 times (7%) larger than Cincinnati, OH-KY-IN metro area's.
History: Kentucky: Admitted to the Union on June 1, 1792, as the 15th state. Western Australia: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1829. In its current form, Kentucky is the older of the two by 109 years.
Kentucky vs Western Australia Economy
GDP: Kentucky's GDP is $295.4 billion (2024) vs Western Australia's $304.6 billion. Kentucky and Western Australia have about the same economic output.
GDP per capita: Kentucky: $64,375 per person vs Western Australia: $99,488. Western Australia's GDP per capita is 1.5 times (55%) higher than Kentucky's.
Official Websites
Kentucky official website · Western Australia official website
More Size Comparisons
All Kentucky size comparisons · All Western Australia 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.