The area was settled by man from at least the 4th millennium BC; the first mentions of the city are from the 9th century AD.
The town developed along the river from the 11th century onwards, building an artificial canal to power various industrial activities, such as wheat mills and paper factories.
The municipality is formed by the city of Colle di Val d'Elsa and the towns and villages (frazioni) of Bibbiano, Borgatello, Campiglia dei Foci, Castel San Gimignano, Collalto, Gracciano dell'Elsa, Le Grazie, Mensanello and Quartaia.
[1] Other notable villages within the comune include Boscona, Buliciano, Coneo, Lano, Montegabbro, Onci, Partena, Paurano, Sant'Andrea and Scarna.
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