St. Croix (USVI): Island Size & Key Facts

Land area: 84 square miles (218 km²) — largest of the three main U.S. Virgin Islands (St. Thomas: 32 sq mi; St. John: 20 sq mi).

Quick Profile

Attribute	Detail
Location	Caribbean Sea, 40 mi south of St. Thomas, 1,100 mi SE of Miami
Population (2020)	~41,000
Highest point	Mount Eagle (1,165 ft / 355 m)
Main towns	Christiansted (north), Frederiksted (west)
Climate	Tropical savanna (Aw); 77–88°F year-round
Economy	Tourism, rum (Cruzan), oil refinery (idling/transition), agriculture

Buck Island Reef National Monument – premier snorkeling/diving.
Salt River Bay – bioluminescent bay, Columbus landing site (1493).
Estate Whim Museum – preserved sugar plantation.
Point Udall – easternmost point of the United States (by travel, not longitude).

St. Croix's size allows a full-day island loop (~60 mi) with beaches, history, and nature—less crowded than St. Thomas.

Caribbean