Villamassargia () is a town and comune (municipality) in the Province of Sulcis Iglesiente in the autonomous island region of Sardinia in Italy, located about west of Cagliari and about northeast of Carbonia. It has 3,278 inhabitants.
Villamassargia borders the municipalities of Domusnovas, Iglesias, Musei, Narcao, and Siliqua.
Demographics As of 2026, the population is 3,278, of which 50.4% are male, and 49.6% are female. Minors make up 10.3% of the population, and seniors make up 31.4%.
Immigration As of 2025, immigrants make up 2.2% of the total population. The 5 largest foreign countries of birth are Romania, Germany, Venezuela, Cuba, and Belarus.
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