The map above shows Maryland and Northern Ireland side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Maryland vs Northern Ireland Geography
Land area: Maryland has a land area of 9,711 square miles (25,151 km²), while Northern Ireland has 5,236 square miles (13,562 km²). Maryland's land area is 1.9 times (85%) larger than Northern Ireland's.
Total area: Maryland: 12,406 square miles (32,131 km²) vs Northern Ireland: 5,456 square miles (14,130 km²), including inland and coastal water. Maryland's total area is 2.3 times (127%) larger than Northern Ireland's.
Length: Maryland is 231 miles (371 km) long from north to south; Northern Ireland is 83 miles (134 km). Maryland's north-south length is 2.8 times (178%) longer than Northern Ireland's.
Width: Maryland spans 243 miles (391 km) east to west; Northern Ireland spans 107 miles (173 km). Maryland's east-west width is 2.3 times (127%) wider than Northern Ireland's.
Highest point: Maryland's highest point is Hoye-Crest at 3,362 feet (1,025 m); Northern Ireland's is Slieve Donard at 2,789 feet (850 m). Hoye-Crest is 573 feet higher than Slieve Donard.
Lowest point: Maryland's lowest point is Atlantic Ocean at 0 feet; Northern Ireland's is Irish Sea at 0 feet. Both lowest points are at or near sea level.
Maryland vs Northern Ireland Population and History
Population: Maryland has a population of 6,263,220 (2024), while Northern Ireland has 1,905,000 (2022). Maryland's population is 3.3 times (229%) larger than Northern Ireland's.
Population density: Maryland: 645.0 people per square mile vs Northern Ireland: 363.8. Maryland's population density is 1.8 times (77%) higher than Northern Ireland's.
Biggest city: Maryland's biggest city is Baltimore with 568,271 people; Northern Ireland's is Belfast with 348,005. Baltimore's population is 1.6 times (63%) larger than Belfast's.
History: Maryland: Admitted to the Union on April 28, 1788, as the 7th state. Northern Ireland: A country within the United Kingdom; created by the partition of Ireland on May 3, 1921. In its current form, Maryland is the older of the two by 133 years.
Maryland vs Northern Ireland Economy
GDP: Maryland's GDP is $546.0 billion (2024) vs Northern Ireland's $58.8 billion. Maryland's economic output is 9.3 times (829%) larger than Northern Ireland's.
GDP per capita: Maryland: $87,180 per person vs Northern Ireland: $30,686. Maryland's GDP per capita is 2.8 times (184%) higher than Northern Ireland's.
Official Websites
Maryland official website · Northern Ireland official website
More Size Comparisons
All Maryland size comparisons · All Northern Ireland 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.