The map above shows Pennsylvania and United Kingdom side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Pennsylvania vs United Kingdom Geography
Land area: Pennsylvania has a land area of 44,742 square miles (115,882 km²), while United Kingdom has 93,410 square miles (241,930 km²). United Kingdom's land area is 2.1 times (109%) larger than Pennsylvania's.
Total area: Pennsylvania: 46,054 square miles (119,279 km²) vs United Kingdom: 94,058 square miles (243,610 km²), including inland and coastal water. United Kingdom's total area is 2.0 times (104%) larger than Pennsylvania's.
Length: Pennsylvania is 284 miles (458 km) long from north to south; United Kingdom is 747 miles (1,202 km). United Kingdom's north-south length is 2.6 times (163%) longer than Pennsylvania's.
Width: Pennsylvania spans 307 miles (495 km) east to west; United Kingdom spans 429 miles (690 km). United Kingdom's east-west width is 1.4 times (40%) wider than Pennsylvania's.
Highest point: Pennsylvania's highest point is Mount Davis at 3,210 feet (978 m); United Kingdom's is Ben Nevis at 4,413 feet (1,345 m). Ben Nevis is 1,203 feet higher than Mount Davis.
Lowest point: Pennsylvania's lowest point is Delaware River at 0 feet; United Kingdom's is The Fens (Holme Fen) at -10 feet. United Kingdom's lowest point is 10 feet lower.
Pennsylvania vs United Kingdom Population and History
Population: Pennsylvania has a population of 13,078,751 (2024), while United Kingdom has 69,487,000 (2025). United Kingdom's population is 5.3 times (431%) larger than Pennsylvania's.
Population density: Pennsylvania: 292.3 people per square mile vs United Kingdom: 743.9. United Kingdom's population density is 2.5 times (154%) higher than Pennsylvania's.
Biggest city: Pennsylvania's biggest city is Philadelphia with 1,573,916 people; United Kingdom's is London with 8,825,001. London's population is 5.6 times (461%) larger than Philadelphia's.
Largest metro area: Pennsylvania's largest metropolitan area is Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metro area (6,330,422 people) vs United Kingdom's London (10,416,420). London's population is 1.6 times (65%) larger than Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metro area's.
History: Pennsylvania: Admitted to the Union on December 12, 1787, as the 2nd 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, Pennsylvania is the older of the two by 14 years.
Pennsylvania vs United Kingdom Economy
GDP: Pennsylvania's GDP is $1,007.9 billion (2024) vs United Kingdom's $4,002.6 billion. United Kingdom's economic output is 4.0 times (297%) larger than Pennsylvania's.
GDP per capita: Pennsylvania: $77,062 per person vs United Kingdom: $57,602. Pennsylvania's GDP per capita is 1.3 times (34%) higher than United Kingdom's.
Average income: Pennsylvania: $70,678 vs United Kingdom: $54,550 average income per person (per capita personal income). Pennsylvania's average income is 1.3 times (30%) higher than United Kingdom's.
Official Websites
Pennsylvania official website · United Kingdom official website
More Size Comparisons
All Pennsylvania 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.