This study investigates the relationship between sense of community, pro-environmental behaviours and feeling of unsafety in a sample of Italian residents in Naples area. The interest for the feeling of unsafety in the urban context result from awareness that the insecurity is defined both as an objective risk of being a victim of an act of aggression in a specific environment, both as the individual perception of this risk and the belief of personal vulnerability. Previous studies suggest that individual fear of crime contributes to urban problems by causing feelings of isolation and vulnerability that limit people’s interactions with their neighbours (Hale, 1996). In fact, people who resides in communities that have more social ties, good relations between neighbors, and many civic activities appear to have less fear of crime and feelings of insecurity in their neighborhood. In this research work, we explored the sense of unsafety, using as individual level predictor gender, age, education and work; besides, at the social level, we use as social level predictor sense of community, urban stresses (noise, traffic, rubbish), social incivilities and immigration. Participants were 205 residents from two cities (Scafati and Torre Annunziata), selected on the basis of the different participation of population to the littering. Participants completed a questionnaire assessing sense of community, neighbourhood and traffic noise, urban cleanliness, and 16 items about safety, crime and fear of crime, the relation safety-immigration, the operate public administration about safety and rubbish. Regression analysis was conducted to test the hypothesis that the different participation of population to the littering influenced the feeling of unsafety; results confirmed this hypothesis; also, perception of urban cleanliness influenced feelings of insecurity. Results were discussed within an environmental framework (McCord et al., 2007).