The map above shows California and Oceania side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
California vs Oceania Geography
Land area: California has a land area of 155,859 square miles (403,673 km²), while Oceania has 3,291,907 square miles (8,526,000 km²). Oceania's land area is 21.1 times larger than California's.
Length: California is 761 miles (1,224 km) long from north to south; Oceania is 5,142 miles (8,275 km). Oceania's north-south length is 6.8 times (576%) longer than California's.
Width: California spans 706 miles (1,137 km) east to west; Oceania spans 7,086 miles (11,404 km). Oceania's east-west width is 10.0 times wider than California's.
Highest point: California's highest point is Mount Whitney at 14,484 feet (4,415 m); Oceania's is Puncak Jaya at 16,024 feet (4,884 m). Puncak Jaya is 1,540 feet higher than Mount Whitney.
Lowest point: California's lowest point is Death Valley at -279 feet; Oceania's is Lake Eyre at -49 feet. California's lowest point is 230 feet lower.
California vs Oceania Population and History
Population: California has a population of 39,431,263 (2024), while Oceania has 46,000,000 (2025 UN estimate). Oceania's population is 1.2 times (17%) larger than California's.
Population density: California: 253.0 people per square mile vs Oceania: 14.0. California's population density is 18.1 times higher than Oceania's.
Official Websites
More Size Comparisons
All California size comparisons · All Oceania 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.