The town is located about 70 kilometres (43 mi) southeast ofRome and about 10 kilometres (6 mi) southwest ofFrosinone. It is at 450 m MSL on a hill that rises, close to the Lepini Mountains, in a dominant position and overlooks the Sacco Valley. The territory of the comune bordersCeccano,Frosinone (the capital of the province),Giuliano di Roma, andSupino.
The origins of the town are not well-known. Shortly before the Roman expansion, the surrounding region was inhabited by Italic peoples speakingOsco-Umbrian languages. The Romans called itPatricum. Their presence is attested by aqueduct ruins in the area. Numerous patrician villas which were located below the town.[3]
In the Middle Ages and in the modern era, it was part of the Papal State, sharing the historical events of Rome, thus becoming part of the Kingdom of Italy in 1870.
During the 20th century, many residents emigrated from Patrica toAliquippa, Pennsylvania, in the United States, to work in the steel mills; J&L in Aliquippa. They also emigrated to Ambridge which is just across the Ohio River from Aliquippa to work in the mills in and around Ambridge as well as at J&L; American Bridge, Wycoff, A.M. Byers, Bethlehem Steel, etc. The Italian community there continues to celebrate each August the Feast ofSan Rocco, patron saint of Patrica.[3]
Mount "Cacume" (derived from the Latincacumen for top, or peak), is mentioned in Canto IV of Dante’s ’’Purgatory’’:Mondazi in Bismantova e iu Cacume, and lies just southwest of the town. In 1903, a 14-metre (46 ft) high, 400-tonne (400,000 kg) cross was erected on the top of the mountain.[3]