So besides "chicken shops" which must be a regional indicator for poor or undesirable what other establishments are also present? There should be an obvious transition type of business that precedes the coffee shop. Combined with chicken shops perhaps the availability of different businesses could give entrepreneurs an indicator where to set up similar or buy up space?
I'd look at what type of cars are parked in the street at night.
I've lived in poor suburban neighborhoods and generally, the poorer the neighborhood, the more cars were parked on the street. I've lived in neighborhoods that looked like used car lots! Poorer neighborhoods tend to have more houses without garages. And in neighborhoods that have garages, the poorer families tend to use their garages as extra bedrooms, workshops, meth labs, basically anything BUT storing cars.
Note, this stereotype probably only works in the suburbs, because in urban areas, every potential parking spot is filled with a car by default.