The map above shows Maryland and Puerto Rico side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Maryland vs Puerto Rico Geography
Land area: Maryland has a land area of 9,711 square miles (25,151 km²), while Puerto Rico has 3,424 square miles (8,868 km²). Maryland's land area is 2.8 times (184%) larger than Puerto Rico's.
Total area: Maryland: 12,406 square miles (32,131 km²) vs Puerto Rico: 3,515 square miles (9,104 km²), including inland and coastal water. Maryland's total area is 3.5 times (253%) larger than Puerto Rico's.
Length: Maryland is 231 miles (371 km) long from north to south; Puerto Rico is 67 miles (107 km). Maryland's north-south length is 3.4 times (245%) longer than Puerto Rico's.
Width: Maryland spans 243 miles (391 km) east to west; Puerto Rico spans 174 miles (279 km). Maryland's east-west width is 1.4 times (40%) wider than Puerto Rico's.
Highest point: Maryland's highest point is Hoye-Crest at 3,362 feet (1,025 m); Puerto Rico's is Cerro de Punta at 4,390 feet (1,338 m). Cerro de Punta is 1,028 feet higher than Hoye-Crest.
Lowest point: Maryland's lowest point is Atlantic Ocean at 0 feet; Puerto Rico's is Atlantic Ocean at 0 feet. Both lowest points are at or near sea level.
Maryland vs Puerto Rico Population and History
Population: Maryland has a population of 6,263,220 (2024), while Puerto Rico has 3,285,874 (2020). Maryland's population is 1.9 times (91%) larger than Puerto Rico's.
Population density: Maryland: 645.0 people per square mile vs Puerto Rico: 959.7. Puerto Rico's population density is 1.5 times (49%) higher than Maryland's.
Biggest city: Maryland's biggest city is Baltimore with 568,271 people; Puerto Rico's is San Juan with 342,259. Baltimore's population is 1.7 times (66%) larger than San Juan's.
Largest metro area: Maryland's largest metropolitan area is Washington-Arlington-Alexandria, DC-VA-MD-WV metro area (6,436,489 people) vs Puerto Rico's San Juan metro area (2,233,177). Washington-Arlington-Alexandria, DC-VA-MD-WV metro area's population is 2.9 times (188%) larger than San Juan metro area's.
History: Maryland: Admitted to the Union on April 28, 1788, as the 7th state. Puerto Rico: A US territory since 1898; a commonwealth since 1952. In its current form, Maryland is the older of the two by 110 years.
Maryland vs Puerto Rico Economy
GDP: Maryland's GDP is $546.0 billion (2024) vs Puerto Rico's $129.0 billion. Maryland's economic output is 4.2 times (323%) larger than Puerto Rico's.
GDP per capita: Maryland: $87,180 per person vs Puerto Rico: $40,650. Maryland's GDP per capita is 2.1 times (114%) higher than Puerto Rico's.
Official Websites
Maryland official website · Puerto Rico official website
More Size Comparisons
All Maryland size comparisons · All Puerto Rico 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.