The map above shows Ohio and Western Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Ohio vs Western Australia Geography
Land area
- Ohio has a land area of 40,859 square miles (105,824 km²), while Western Australia has 975,685 square miles (2,527,013 km²).
- Western Australia's land area is 23.9 times larger than Ohio's.
Total area
- Ohio: 44,826 square miles (116,098 km²) vs Western Australia: 975,685 square miles (2,527,013 km²), including inland and coastal water.
- Western Australia's total area is 21.8 times larger than Ohio's.
Length
- Ohio is 291 miles (468 km) long from north to south; Western Australia is 1,590 miles (2,558 km).
- Western Australia's north-south length is 5.5 times (446%) longer than Ohio's.
Width
- Ohio spans 317 miles (510 km) east to west; Western Australia spans 1,286 miles (2,069 km).
- Western Australia's east-west width is 4.1 times (306%) wider than Ohio's.
Highest point
- Ohio's highest point is Campbell Hill at 1,547 feet (472 m); Western Australia's is Mount Meharry at 4,098 feet (1,249 m).
- Mount Meharry is 2,551 feet higher than Campbell Hill.
Lowest point
- Ohio's lowest point is Ohio River at 455 feet; Western Australia's is Indian Ocean at 0 feet.
- Western Australia's lowest point is 455 feet lower.
Ohio vs Western Australia Population and History
Population
- Ohio has a population of 11,883,304 (2024), while Western Australia has 3,061,672 (2025).
- Ohio's population is 3.9 times (288%) larger than Western Australia's.
Population density
- Ohio: 290.8 people per square mile vs Western Australia: 3.1.
- Ohio's population density is 93.8 times higher than Western Australia's.
Largest metro area
- Ohio'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
- Ohio: Admitted to the Union on March 1, 1803, as the 17th state.
- Western Australia: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1829.
- In its current form, Ohio is the older of the two by 98 years.
Ohio vs Western Australia Economy
GDP
- Ohio's GDP is $923.1 billion (2024) vs Western Australia's $304.6 billion.
- Ohio's economic output is 3.0 times (203%) larger than Western Australia's.
GDP per capita
- Ohio: $77,684 per person vs Western Australia: $99,488.
- Western Australia's GDP per capita is 1.3 times (28%) higher than Ohio's.
Official Websites
Ohio official website · Western Australia official website
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More Size Comparisons
All Ohio 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.