Human settlements in the area date back to the Roman Empire (Roman tombstone near the Cascina Pontevica) and
Lombards dominion. The first documented town was established in the 15th century; the locality was called
Tregonzo or
Tregoncio which derives from
Latin Inter Gurgites. Under the
Venetian Republic (15th and 18th century, the town was organized in the Quadra of
Mairano in 1483, then it passed to the Quadra of
Bagnolo. It was occupied by the army from
Milan during the war of
Ferrara. In the ephemeral Napoleonic
Repubblica di Brescia (1797), the commune belonged to the
Cantone della Garza Orientale. During the
Napoleonic dominion, the commune was abolited: town was administrated by Brescia directly. In 1814,
Austrians restored the municipality autonomy. In 1881 during an administrative reform of the
Kingdom of Italy, the commune was renamed San Zeno Naviglio. In 1817, a bridge was constructed near the
Sörèc zone (1817). In 1866, the
Brescia–Cremona railway was opened along with its railway station. In 1893, the railway construction opened
a link to Piadena and Parma. After
Second World War the population grew. It reached 2,000 in the 1960s and 3,000 in the 1980s. ==Economy==