Malta , officially the Republic of Malta (Maltese: Repubblika ta' Malta), is a Southern European country consisting of an archipelago situated in the centre of the Mediterranean, 80 km (50 mi) south of Sicily, 284 km (176 mi) east of Tunisia and 333 km (207 mi) north of Libya, with Gibraltar 1,755 km (1,091 mi) to the west and Alexandria 1,508 km (937 mi) to the east. Malta covers just over 316 km2 (122 sq mi) in land area, making it one of the world's smallest states. It is also one of the most densely populated countries worldwide. The de facto capital city of Malta is Valletta; the largest town, Birkirkara. The main island comprises many towns, which together form one Larger Urban Zone (LUZ) with a population of 368,250 according to Eurostat. The country has two official languages, Maltese (constitutionally the national language) and English.