The map above shows United States and Antarctica side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
United States vs Antarctica Geography
Land area: United States has a land area of 3,533,467 square miles (9,151,637 km²), while Antarctica has 5,482,651 square miles (14,200,000 km²). Antarctica's land area is 1.6 times (55%) larger than United States'.
Highest point: United States's highest point is Denali at 20,308 feet (6,190 m); Antarctica's is Vinson Massif at 16,050 feet (4,892 m). Denali is 4,258 feet higher than Vinson Massif.
Lowest point: United States's lowest point is Death Valley at -279 feet; Antarctica's is Denman Glacier trough (under ice) at -11,483 feet. Antarctica's lowest point is 11,204 feet lower.
Official Websites
United States official website
More Size Comparisons
All United States size comparisons · All Antarctica 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.