As of 31 December 2014, the main comuni by population are:
City
Population
Density
Frosinone
46,529
47 km²
Cassino
35,913
82 km²
Alatri
29,642
92 km²
Sora
26,162
71 km²
Ceccano
23,504
60 km²
Anagni
21,441
113 km²
Ferentino
21,027
80 km²
Veroli
20,798
120 km²
History
The first traces of human presence in the provincial territory date back to prehistoric times: a famous skull of Homo erectus, dating from 800,000 years ago, constitutes the most ancient finding of the Homo species in Europe. In historical times, the area, previously occupied by the so-called Pelasgic civilization, was settled by Indo-European colonists. This arrival is referred to in numerous legends, such as those of Aeneas and Saturn. The latter, ousted by Olympus, was said to come to Lazio to help the men and found seven cities whose name begins with "A". : Central Italian in pink and Southern Italian in magenta.|300px In the 7th century BC the area of what is now the province entered the orbit of Rome, which made it the so-called Latium adiectum. However, Rome needed some 300 years to obtain a definitive victory against the Volsci and the Hernici. They became Romanized after the Social and the Samnite Wars. After the fall of the Western Roman Empire, the northern part of the province belonged to the Papal States. In the Middle Ages, the abbey of Monte Cassino was always a major landowner and a politically renowned element of the area. The southeastern part was a frontier area which was long claimed by the other major powers of the time, the Duchies of Benevento and Gaeta and the County of Aversa: annexed to the Kingdom of Naples under the Normans, from the late 14th century it became part of the county and then, with an independent status, of the Duchy of Sora. Pontecorvo remained a Papal enclave from 1463. After the unification of Italy, in 1927 the Fascist government made Frosinone the capital of a province which unified different that which belonged to the Papal and Neapolitan states. This action generated criticism, as these states were considered too different in history, language and culture, especially by the Bourbon-nostalgic party that maintained a strong position in southern Italy for many decades. The creation of a new province, with capitals in Cassino, Formia and Sora, and comprising the former territories of the Kingdom of Naples, has been proposed.