High Quality Content by WIKIPEDIA articles! Velletri (; Latin Velitrae) is an Italian town of 53,298 inhabitants. It is a comune in the province of Rome, on the Alban Hills, in Lazio (Latium) - Italy. It is bounded by other communes of Rocca di Papa, Lariano, Cisterna di Latina, Artena, Aprilia, Nemi, Genzano di Roma, Lanuvio. Its motto is: Est mihi libertas papalis et imperialis.