The map above shows Ohio and New South Wales side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Ohio vs New South Wales Geography
Land area: Ohio has a land area of 40,859 square miles (105,824 km²), while New South Wales has 309,130 square miles (800,642 km²). New South Wales' land area is 7.6 times (657%) larger than Ohio's.
Total area: Ohio: 44,826 square miles (116,098 km²) vs New South Wales: 309,130 square miles (800,642 km²), including inland and coastal water. New South Wales' total area is 6.9 times (590%) larger than Ohio's.
Length: Ohio is 291 miles (468 km) long from north to south; New South Wales is 678 miles (1,092 km). New South Wales' north-south length is 2.3 times (133%) longer than Ohio's.
Width: Ohio spans 317 miles (510 km) east to west; New South Wales spans 831 miles (1,338 km). New South Wales' east-west width is 2.6 times (162%) wider than Ohio's.
Highest point: Ohio's highest point is Campbell Hill at 1,547 feet (472 m); New South Wales's is Mount Kosciuszko at 7,310 feet (2,228 m). Mount Kosciuszko is 5,763 feet higher than Campbell Hill.
Lowest point: Ohio's lowest point is Ohio River at 455 feet; New South Wales's is Pacific Ocean at 0 feet. New South Wales's lowest point is 455 feet lower.
Ohio vs New South Wales Population and History
Population: Ohio has a population of 11,883,304 (2024), while New South Wales has 8,624,534 (2025). Ohio's population is 1.4 times (38%) larger than New South Wales'.
Population density: Ohio: 290.8 people per square mile vs New South Wales: 27.9. Ohio's population density is 10.4 times higher than New South Wales'.
Largest metro area: Ohio'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: Ohio: Admitted to the Union on March 1, 1803, as the 17th state. New South Wales: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1788. In its current form, Ohio is the older of the two by 98 years.
Ohio vs New South Wales Economy
GDP: Ohio's GDP is $923.1 billion (2024) vs New South Wales's $547.1 billion. Ohio's economic output is 1.7 times (69%) larger than New South Wales'.
GDP per capita: Ohio: $77,684 per person vs New South Wales: $63,435. Ohio's GDP per capita is 1.2 times (22%) higher than New South Wales'.
Official Websites
Ohio official website · New South Wales official website
More Size Comparisons
All Ohio 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.