The map above shows Washington and United Kingdom side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Washington vs United Kingdom Geography
Land area: Washington has a land area of 66,455 square miles (172,119 km²), while United Kingdom has 93,410 square miles (241,930 km²). United Kingdom's land area is 1.4 times (41%) larger than Washington's.
Total area: Washington: 71,301 square miles (184,668 km²) vs United Kingdom: 94,058 square miles (243,610 km²), including inland and coastal water. United Kingdom's total area is 1.3 times (32%) larger than Washington's.
Length: Washington is 238 miles (383 km) long from north to south; United Kingdom is 747 miles (1,202 km). United Kingdom's north-south length is 3.1 times (214%) longer than Washington's.
Width: Washington spans 399 miles (641 km) east to west; United Kingdom spans 429 miles (690 km). United Kingdom's east-west width is 1.1 times (8%) wider than Washington's.
Highest point: Washington's highest point is Mount Rainier at 14,409 feet (4,392 m); United Kingdom's is Ben Nevis at 4,413 feet (1,345 m). Mount Rainier is 9,996 feet higher than Ben Nevis.
Lowest point: Washington's lowest point is Pacific Ocean at 0 feet; United Kingdom's is The Fens (Holme Fen) at -10 feet. United Kingdom's lowest point is 10 feet lower.
Washington vs United Kingdom Population and History
Population: Washington has a population of 7,958,180 (2024), while United Kingdom has 69,487,000 (2025). United Kingdom's population is 8.7 times (773%) larger than Washington's.
Population density: Washington: 119.8 people per square mile vs United Kingdom: 743.9. United Kingdom's population density is 6.2 times (521%) higher than Washington's.
Biggest city: Washington's biggest city is Seattle with 780,995 people; United Kingdom's is London with 8,825,001. London's population is 11.3 times larger than Seattle's.
Largest metro area: Washington's largest metropolitan area is Seattle-Tacoma-Bellevue, WA metro area (4,145,494 people) vs United Kingdom's London (10,416,420). London's population is 2.5 times (151%) larger than Seattle-Tacoma-Bellevue, WA metro area's.
History: Washington: Admitted to the Union on November 11, 1889, as the 42nd 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 88 years.
Washington vs United Kingdom Economy
GDP: Washington's GDP is $856.0 billion (2024) vs United Kingdom's $4,002.6 billion. United Kingdom's economic output is 4.7 times (368%) larger than Washington's.
GDP per capita: Washington: $107,564 per person vs United Kingdom: $57,602. Washington's GDP per capita is 1.9 times (87%) higher than United Kingdom's.
Average income: Washington: $85,187 vs United Kingdom: $54,550 average income per person (per capita personal income). Washington's average income is 1.6 times (56%) higher than United Kingdom's.
Official Websites
Washington official website · United Kingdom official website
More Size Comparisons
All Washington 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.