The map above shows Maryland and Massachusetts side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Maryland vs Massachusetts Geography
Land area: Maryland has a land area of 9,711 square miles (25,151 km²), while Massachusetts has 7,801 square miles (20,204 km²). Maryland's land area is 1.2 times (24%) larger than Massachusetts'.
Total area: Maryland: 12,406 square miles (32,131 km²) vs Massachusetts: 10,554 square miles (27,335 km²), including inland and coastal water. Maryland's total area is 1.2 times (18%) larger than Massachusetts'.
Length: Maryland is 231 miles (371 km) long from north to south; Massachusetts is 123 miles (198 km). Maryland's north-south length is 1.9 times (88%) longer than Massachusetts'.
Width: Maryland spans 243 miles (391 km) east to west; Massachusetts spans 185 miles (297 km). Maryland's east-west width is 1.3 times (31%) wider than Massachusetts'.
Highest point: Maryland's highest point is Hoye-Crest at 3,362 feet (1,025 m); Massachusetts's is Mount Greylock at 3,489 feet (1,063 m). Mount Greylock is 127 feet higher than Hoye-Crest.
Lowest point: Maryland's lowest point is Atlantic Ocean at 0 feet; Massachusetts's is Atlantic Ocean at 0 feet. Both lowest points are at or near sea level.
Maryland vs Massachusetts Population and History
Population: Maryland has a population of 6,263,220 (2024), while Massachusetts has 7,136,171 (2024). Massachusetts' population is 1.1 times (14%) larger than Maryland's.
Population density: Maryland: 645.0 people per square mile vs Massachusetts: 914.8. Massachusetts' population density is 1.4 times (42%) higher than Maryland's.
Biggest city: Maryland's biggest city is Baltimore with 568,271 people; Massachusetts's is Boston with 673,458. Boston's population is 1.2 times (19%) 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 Massachusetts's Boston-Cambridge-Newton, MA-NH metro area (5,025,517). Washington-Arlington-Alexandria, DC-VA-MD-WV metro area's population is 1.3 times (28%) larger than Boston-Cambridge-Newton, MA-NH metro area's.
History: Maryland: Admitted to the Union on April 28, 1788, as the 7th state. Massachusetts: Admitted to the Union on February 6, 1788, as the 6th state.
Maryland vs Massachusetts Economy
GDP: Maryland's GDP is $546.0 billion (2024) vs Massachusetts's $778.5 billion. Massachusetts' economic output is 1.4 times (43%) larger than Maryland's.
GDP per capita: Maryland: $87,180 per person vs Massachusetts: $109,095. Massachusetts' GDP per capita is 1.3 times (25%) higher than Maryland's.
Average income: Maryland: $79,259 vs Massachusetts: $93,607 average income per person (per capita personal income). Massachusetts' average income is 1.2 times (18%) higher than Maryland's.
Maryland vs Massachusetts Counties
Number of counties: Maryland has 24 counties, while Massachusetts has 14. Maryland's county count is 1.7 times (71%) higher than Massachusetts'.
Biggest county by area: Maryland's largest county is Frederick County at 661 square miles; Massachusetts's is Worcester County at 1,511 square miles. Worcester County's land area is 2.3 times (129%) larger than Frederick County's.
Smallest county by area: Maryland: Baltimore city (81 sq mi) vs Massachusetts: Nantucket County (46 sq mi). Baltimore city's land area is 1.8 times (75%) larger than Nantucket County's.
Most populous county: Maryland: Montgomery County (1,082,273 people) vs Massachusetts: Middlesex County (1,668,956 people). Middlesex County's population is 1.5 times (54%) larger than Montgomery County's.
Least populous county: Maryland: Kent County (19,557 people) vs Massachusetts: Nantucket County (14,670 people). Kent County's population is 1.3 times (33%) larger than Nantucket County's.
Richest county: Maryland: Montgomery County ($104,882 per capita income) vs Massachusetts: Nantucket County ($129,250). Nantucket County's income is 1.2 times (23%) richer than Montgomery County's.
Poorest county: Maryland: Somerset County ($41,421 per capita income) vs Massachusetts: Hampshire County ($65,432). Hampshire County's income is 1.6 times (58%) richer than Somerset County's.
Maryland vs Massachusetts Taxes
State income tax: Maryland has a top income tax rate of 6.5%, while Massachusetts has a top income tax rate of 9%. Massachusetts's top rate is 2.5 percentage points higher.
Property tax: Maryland: 0.95% effective rate vs Massachusetts: 1% of home value per year. Massachusetts's rate is 0.05 percentage points higher.
Sales tax: Maryland: 6% combined state and average local rate vs Massachusetts: 6.25%. Massachusetts's combined rate is 0.25 percentage points higher.
Official Websites
Maryland official website · Massachusetts official website
More Size Comparisons
All Maryland size comparisons · All Massachusetts 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.