Viterbo is a locality located 66.25 km south-southeast from Rome in Lazio, Italy. The population of Viterbo is 67,798 people. Civitavecchia, Fiumicino, Guidonia Montecelio are located close to Viterbo. You can find Viterbo on any map using the following decimal coordinates: 42.4186 (latitude), 12.1042 (longitude).