The People in Your Neighborhood?
Italy, I've been told, is not a "good neighbor" country. Though I can't say from experience, apparently you're more likely to get a knock from the police to ask that you turn down your music than your from the perturbed neighbor who sent them. Perhaps in line with this idea, it seems that there is no single word in Italian to describe the people who live in your vicinato (neighborhood). The word vicini (neighbors) is used only for those who live in your same apartment building,who are often your relatives. "Le abitanti del quartiere" was the best that our languange instructor could come up with for those who live outside your building. By the way, here's a photo of the building where I live.
