The map above shows Maryland and United Kingdom side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Maryland vs United Kingdom Geography
Land area: Maryland has a land area of 9,711 square miles (25,151 km²), while United Kingdom has 93,410 square miles (241,930 km²). United Kingdom's land area is 9.6 times (862%) larger than Maryland's.
Total area: Maryland: 12,406 square miles (32,131 km²) vs United Kingdom: 94,058 square miles (243,610 km²), including inland and coastal water. United Kingdom's total area is 7.6 times (658%) larger than Maryland's.
Length: Maryland is 231 miles (371 km) long from north to south; United Kingdom is 747 miles (1,202 km). United Kingdom's north-south length is 3.2 times (223%) longer than Maryland's.
Width: Maryland spans 243 miles (391 km) east to west; United Kingdom spans 429 miles (690 km). United Kingdom's east-west width is 1.8 times (77%) wider than Maryland's.
Highest point: Maryland's highest point is Hoye-Crest at 3,362 feet (1,025 m); United Kingdom's is Ben Nevis at 4,413 feet (1,345 m). Ben Nevis is 1,051 feet higher than Hoye-Crest.
Lowest point: Maryland's lowest point is Atlantic Ocean at 0 feet; United Kingdom's is The Fens (Holme Fen) at -10 feet. United Kingdom's lowest point is 10 feet lower.
Maryland vs United Kingdom Population and History
Population: Maryland has a population of 6,263,220 (2024), while United Kingdom has 69,487,000 (2025). United Kingdom's population is 11.1 times larger than Maryland's.
Population density: Maryland: 645.0 people per square mile vs United Kingdom: 743.9. United Kingdom's population density is 1.2 times (15%) higher than Maryland's.
Biggest city: Maryland's biggest city is Baltimore with 568,271 people; United Kingdom's is London with 8,825,001. London's population is 15.5 times larger than Baltimore's.
Largest metro area: Maryland's largest metropolitan area is Washington-Arlington-Alexandria, DC-VA-MD-WV metro area (6,436,489 people) vs United Kingdom's London (10,416,420). London's population is 1.6 times (62%) larger than Washington-Arlington-Alexandria, DC-VA-MD-WV metro area's.
History: Maryland: Admitted to the Union on April 28, 1788, as the 7th 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, Maryland is the older of the two by 13 years.
Maryland vs United Kingdom Economy
GDP: Maryland's GDP is $546.0 billion (2024) vs United Kingdom's $4,002.6 billion. United Kingdom's economic output is 7.3 times (633%) larger than Maryland's.
GDP per capita: Maryland: $87,180 per person vs United Kingdom: $57,602. Maryland's GDP per capita is 1.5 times (51%) higher than United Kingdom's.
Average income: Maryland: $79,259 vs United Kingdom: $54,550 average income per person (per capita personal income). Maryland's average income is 1.5 times (45%) higher than United Kingdom's.
Official Websites
Maryland official website · United Kingdom official website
More Size Comparisons
All Maryland 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.