The map above shows Maryland and Washington side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Maryland vs Washington Geography
Land area: Maryland has a land area of 9,711 square miles (25,151 km²), while Washington has 66,455 square miles (172,119 km²). Washington's land area is 6.8 times (584%) larger than Maryland's.
Total area: Maryland: 12,406 square miles (32,131 km²) vs Washington: 71,301 square miles (184,668 km²), including inland and coastal water. Washington's total area is 5.7 times (475%) larger than Maryland's.
Length: Maryland is 231 miles (371 km) long from north to south; Washington is 238 miles (383 km). Maryland and Washington have about the same north-south length.
Width: Maryland spans 243 miles (391 km) east to west; Washington spans 399 miles (641 km). Washington's east-west width is 1.6 times (64%) wider than Maryland's.
Highest point: Maryland's highest point is Hoye-Crest at 3,362 feet (1,025 m); Washington's is Mount Rainier at 14,409 feet (4,392 m). Mount Rainier is 11,047 feet higher than Hoye-Crest.
Lowest point: Maryland's lowest point is Atlantic Ocean at 0 feet; Washington's is Pacific Ocean at 0 feet. Both lowest points are at or near sea level.
Maryland vs Washington Population and History
Population: Maryland has a population of 6,263,220 (2024), while Washington has 7,958,180 (2024). Washington's population is 1.3 times (27%) larger than Maryland's.
Population density: Maryland: 645.0 people per square mile vs Washington: 119.8. Maryland's population density is 5.4 times (438%) higher than Washington's.
Biggest city: Maryland's biggest city is Baltimore with 568,271 people; Washington's is Seattle with 780,995. Seattle's population is 1.4 times (37%) 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 Washington's Seattle-Tacoma-Bellevue, WA metro area (4,145,494). Washington-Arlington-Alexandria, DC-VA-MD-WV metro area's population is 1.6 times (55%) larger than Seattle-Tacoma-Bellevue, WA metro area's.
History: Maryland: Admitted to the Union on April 28, 1788, as the 7th state. Washington: Admitted to the Union on November 11, 1889, as the 42nd state. In its current form, Maryland is the older of the two by 101 years.
Maryland vs Washington Economy
GDP: Maryland's GDP is $546.0 billion (2024) vs Washington's $856.0 billion. Washington's economic output is 1.6 times (57%) larger than Maryland's.
GDP per capita: Maryland: $87,180 per person vs Washington: $107,564. Washington's GDP per capita is 1.2 times (23%) higher than Maryland's.
Average income: Maryland: $79,259 vs Washington: $85,187 average income per person (per capita personal income). Washington's average income is 1.1 times (7%) higher than Maryland's.
Maryland vs Washington Counties
Number of counties: Maryland has 24 counties, while Washington has 39. Washington's county count is 1.6 times (63%) higher than Maryland's.
Biggest county by area: Maryland's largest county is Frederick County at 661 square miles; Washington's is Okanogan County at 5,266 square miles. Okanogan County's land area is 8.0 times (697%) larger than Frederick County's.
Smallest county by area: Maryland: Baltimore city (81 sq mi) vs Washington: San Juan County (174 sq mi). San Juan County's land area is 2.1 times (115%) larger than Baltimore city's.
Most populous county: Maryland: Montgomery County (1,082,273 people) vs Washington: King County (2,340,211 people). King County's population is 2.2 times (116%) larger than Montgomery County's.
Least populous county: Maryland: Kent County (19,557 people) vs Washington: Garfield County (2,404 people). Kent County's population is 8.1 times (714%) larger than Garfield County's.
Richest county: Maryland: Montgomery County ($104,882 per capita income) vs Washington: King County ($128,684). King County's income is 1.2 times (23%) richer than Montgomery County's.
Poorest county: Maryland: Somerset County ($41,421 per capita income) vs Washington: Ferry County ($50,456). Ferry County's income is 1.2 times (22%) richer than Somerset County's.
Maryland vs Washington Taxes
State income tax: Maryland has a top income tax rate of 6.5%, while Washington has a 9% tax on capital gains only.
Property tax: Maryland: 0.95% effective rate vs Washington: 0.79% of home value per year. Maryland's rate is 0.16 percentage points higher.
Sales tax: Maryland: 6% combined state and average local rate vs Washington: 9.57%. Washington's combined rate is 3.57 percentage points higher.
Official Websites
Maryland official website · Washington official website
More Size Comparisons
All Maryland size comparisons · All Washington 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.