Peninsula in Central America, divided among Mexico, Belize, and Guatemala; area 180,000 sq km/70,000 sq mi. Tropical crops are grown. It is inhabited by Maya Indians and contains the remains of their civilization. There are ruins at Chichen Itza and Uxmal. The Mexican state of Yucatan has an area of 38,402 sq km/14,823 sq mi, and a population (1990) of 1,035,000. Its capital is Merida.