Sicily is a melting pot of a variety of different cultures and ethnicities, including the original Italic people, the Phoenicians, Carthaginians, Greeks, Romans, Byzantines, Saracens, Normans, Swabians, Aragonese, Lombards, Spaniards, French, and Albanians, each contributing to the island's culture and genetic makeup. About five million people live in Sicily, making it the fourth most populated region in Italy. In the first century after the Italian unification, Sicily had one of the most negative net migration rates among the regions of Italy because of the emigration of millions of people to other European countries, North America, South America and Australia. Like the South of Italy and Sardinia, immigration to the island is very low compared to other regions of Italy because workers tend to head to Northern Italy instead, due to better employment and industrial opportunities. The most recent ISTAT figures show around 175,000 immigrants out of the total of almost 5.1 million population (nearly 3.5% of the population); Romanians with more than 50,000 make up the most immigrants, followed by Tunisians, Moroccans, Sri Lankans, Albanians, and others mostly from Eastern Europe. As in the rest of Italy, the official language is Italian and the primary religion is Roman Catholicism.

Is it true that is sicily the most populated region in italy?
no