The map above shows Maryland and South Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Maryland vs South Australia Geography
Land area
- Maryland has a land area of 9,711 square miles (25,151 km²), while South Australia has 380,048 square miles (984,321 km²).
- South Australia's land area is 39.1 times larger than Maryland's.
Total area
- Maryland: 12,406 square miles (32,131 km²) vs South Australia: 380,048 square miles (984,321 km²), including inland and coastal water.
- South Australia's total area is 30.6 times larger than Maryland's.
Length
- Maryland is 231 miles (371 km) long from north to south; South Australia is 1,078 miles (1,735 km).
- South Australia's north-south length is 4.7 times (367%) longer than Maryland's.
Width
- Maryland spans 243 miles (391 km) east to west; South Australia spans 825 miles (1,328 km).
- South Australia's east-west width is 3.4 times (240%) wider than Maryland's.
Highest point
- Maryland's highest point is Hoye-Crest at 3,362 feet (1,025 m); South Australia's is Mount Woodroffe at 4,708 feet (1,435 m).
- Mount Woodroffe is 1,346 feet higher than Hoye-Crest.
Lowest point
- Maryland's lowest point is Atlantic Ocean at 0 feet; South Australia's is Lake Eyre at -49 feet.
- South Australia's lowest point is 49 feet lower.
Maryland vs South Australia Population and History
Population
- Maryland has a population of 6,263,220 (2024), while South Australia has 1,908,182 (2025).
- Maryland's population is 3.3 times (228%) larger than South Australia's.
Population density
- Maryland: 645.0 people per square mile vs South Australia: 5.0.
- Maryland's population density is 129.0 times higher than South Australia's.
Largest metro area
- Maryland's largest metropolitan area is Washington-Arlington-Alexandria, DC-VA-MD-WV metro area (6,436,489 people) vs South Australia's Greater Adelaide (1,491,015).
- Washington-Arlington-Alexandria, DC-VA-MD-WV metro area's population is 4.3 times (332%) larger than Greater Adelaide's.
History
- Maryland: Admitted to the Union on April 28, 1788, as the 7th state.
- South Australia: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1836.
- In its current form, Maryland is the older of the two by 113 years.
Maryland vs South Australia Economy
GDP
- Maryland's GDP is $546.0 billion (2024) vs South Australia's $100.2 billion.
- Maryland's economic output is 5.4 times (445%) larger than South Australia's.
GDP per capita
- Maryland: $87,180 per person vs South Australia: $52,511.
- Maryland's GDP per capita is 1.7 times (66%) higher than South Australia's.
Official Websites
Maryland official website · South Australia official website
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More Size Comparisons
All Maryland size comparisons · All South Australia 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.