La Sassa, or simply Sassa, is a village in Tuscany, central Italy, administratively a frazione of the comune of Montecatini Val di Cecina, province of Pisa. At the time of the 2001 census its population was 152. Popolazione residente - Pisa (dettaglio loc. abitate) - Censimento 2001 , Istat.
La Sassa is about 80 km from Pisa and 30 km from Montecatini Val di Cecina.
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