Masainas is a town and comune (municipality) in the Province of Sulcis Iglesiente in the autonomous island region of Sardinia in Italy, part of the traditional region of Sulcis, located about southwest of Cagliari and about southeast of Carbonia. It has 1,203 inhabitants.
Masainas borders the municipalities of Giba, Piscinas, Sant'Anna Arresi, and Teulada.
Demographics As of 2026, the population is 1,203, of which 47.5% are male, and 52.5% are female. Minors make up 8.9% of the population, and seniors make up 36.2%.
Immigration As of 2025, immigrants make up 3.8% of the total population. The 5 largest foreign countries of birth are Germany, Morocco, Bangladesh, Ukraine, and France.
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