Faicchio is located at the foot of Monte Monaco di Gioia and in an elevated position with respect to the Titerno river. Some scholars believe it to be the ancient Samnite town of Faefola, mentioned by Titus Livius.
As there are remains of aqueducts, a bridge and a cryptoporticus, it is guessed that the town was the site of a Roman settlement. Furthermore, it was the work of the Lombards to build the church of San Michele, which is located in a cave on Mount Monaco di Gioia.
In Norman times, it was a fief of Guglielmo Sanframondo, then of Giovanni Mansorio, and finally of Gabriele De Martino (named ‘Baron Duke of Faicchio’) and his heirs from 1612 until the abolition of feudal rights.
In 1688, the town was the victim of an earthquake that destroyed many houses but left the castle intact.
In 1816, Faicchio was integrated into the district of Piedimonte d’Alife and finally became part of the province of Benevento after the unification of Italy.
After the unification of Italy, the area was affected by the phenomenon of banditry (1861-1863). Thanks to the presence of a number of ravines, the town was considered a safe haven for groups of bandits.
In 1943, during the Second World War, Faicchio became a battleground. The town suffered several bombings by the Americans and the communication routes were undermined by German troops.
Today, the municipality has about 3500 inhabitants.