1. Islands by County
of that city within the next few years.
influence” which allows that city to exercise influence over how that unincorporated area develops. 4 Fringes that are outside the sphere of influence of a city may lie within the potential growth footprint
city’s geographical boundaries. Some fringes may be located within an adjacent city’s “sphere of
Fringes are unincorporated county areas that are located adjacent to or within 1.5 miles of a
Hinterlands are unincorporated county areas that are located more than 1.5 miles beyond any
city’s geographical boundaries.
Each of these types of communities needs to be mapped, documented and understood in order to grasp the nuanced policy circumstances of unincorporated communities in the Valley. Some circumstances and strategies may be relevant to all, while others will be specific to one type.
Figure 1. Types of Unincorporated Communities