Belize (/bəˈliːz/) is a country on the eastern coast of Central America. It is the only country in Central America whose official language is English, though Belizean Creole (Kriol) and Spanish are also commonly spoken.Belize is bordered on the north by Mexico, on the south and west by Guatemala, and on the east by the Caribbean Sea.Its mainland is about 290 km (180 mi) long and 110 km (68 mi) wide.t is the only country in Central America whose official language is English, though Belizean Creole (Kriol) and Spanish are also commonly spoken. Belize is bordered on the north by Mexico, on the south and west by Guatemala, and on the east by the Caribbean Sea.