Serravalle is a village in Tuscany, central Italy, administratively a frazione of the comune of Buonconvento, province of Siena. At the time of the 2001 census, its population was 18. Popolazione residente - Siena (dettaglio loc. abitate) - Censimento 2001 , Istat.
Serravalle is located about 24 km from Siena and 4 km from Buonconvento.
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