The map above shows Ohio and United Kingdom side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Ohio vs United Kingdom Geography
Land area: Ohio has a land area of 40,859 square miles (105,824 km²), while United Kingdom has 93,410 square miles (241,930 km²). United Kingdom's land area is 2.3 times (129%) larger than Ohio's.
Total area: Ohio: 44,826 square miles (116,098 km²) vs United Kingdom: 94,058 square miles (243,610 km²), including inland and coastal water. United Kingdom's total area is 2.1 times (110%) larger than Ohio's.
Length: Ohio is 291 miles (468 km) long from north to south; United Kingdom is 747 miles (1,202 km). United Kingdom's north-south length is 2.6 times (157%) longer than Ohio's.
Width: Ohio spans 317 miles (510 km) east to west; United Kingdom spans 429 miles (690 km). United Kingdom's east-west width is 1.4 times (35%) wider than Ohio's.
Highest point: Ohio's highest point is Campbell Hill at 1,547 feet (472 m); United Kingdom's is Ben Nevis at 4,413 feet (1,345 m). Ben Nevis is 2,866 feet higher than Campbell Hill.
Lowest point: Ohio's lowest point is Ohio River at 455 feet; United Kingdom's is The Fens (Holme Fen) at -10 feet. United Kingdom's lowest point is 465 feet lower.
Ohio vs United Kingdom Population and History
Population: Ohio has a population of 11,883,304 (2024), while United Kingdom has 69,487,000 (2025). United Kingdom's population is 5.8 times (485%) larger than Ohio's.
Population density: Ohio: 290.8 people per square mile vs United Kingdom: 743.9. United Kingdom's population density is 2.6 times (156%) higher than Ohio's.
Biggest city: Ohio's biggest city is Columbus with 933,263 people; United Kingdom's is London with 8,825,001. London's population is 9.5 times (846%) larger than Columbus'.
Largest metro area: Ohio's largest metropolitan area is Cincinnati, OH-KY-IN metro area (2,302,815 people) vs United Kingdom's London (10,416,420). London's population is 4.5 times (352%) larger than Cincinnati, OH-KY-IN metro area's.
History: Ohio: Admitted to the Union on March 1, 1803, as the 17th state. United Kingdom: Formed as the United Kingdom of Great Britain and Ireland on January 1, 1801; took its current form in 1922. In its current form, United Kingdom is the older of the two by 2 years.
Ohio vs United Kingdom Economy
GDP: Ohio's GDP is $923.1 billion (2024) vs United Kingdom's $4,002.6 billion. United Kingdom's economic output is 4.3 times (334%) larger than Ohio's.
GDP per capita: Ohio: $77,684 per person vs United Kingdom: $57,602. Ohio's GDP per capita is 1.3 times (35%) higher than United Kingdom's.
Average income: Ohio: $64,464 vs United Kingdom: $54,550 average income per person (per capita personal income). Ohio's average income is 1.2 times (18%) higher than United Kingdom's.
Official Websites
Ohio official website · United Kingdom official website
More Size Comparisons
All Ohio size comparisons · All United Kingdom 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.