To dream about your neighborhood represents a sense of community. You need to develop new friends and new ties. Consider your waking feelings toward your neighbors.
To dream that you are in an unknown neighborhood signifies aspects of your subconscious. The dream may also parallel a waking situation which is new or unfamiliar to you. You are venturing into a brand new territory and it is making you slightly anxious and uneasy.
To see a poor neighborhood in your dream indicates that you are feeling drained or emotionally impoverished. You are lacking support or love. Alternatively, the dream may be trying to get you to be more compassionate to those who are less fortunate. Perhaps you need to extend a helping hand to someone who is in need. The poor neighborhood may also just be a reflection of your actual living situation.