Tognazza is a village in Tuscany, central Italy, administratively a frazione of the comune of Monteriggioni, province of Siena. At the time of the 2001 census its population was 323. Popolazione residente - Siena (dettaglio loc. abitate) - Censimento 2001, Istat.
Tognazza is about 10 km from Siena and 9 km from Monteriggioni.
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