Individuals and families who have needs and interests in common based on the population density and other related characteristics of the area in which they live.

Individuals and families who have needs and interests in common based on living in relatively unpopulated areas or in areas devoted principally to agriculture.

Individuals and families of Native American descent who have needs and interests in common based on living in areas recognized by the federal or a state government as being set aside for the use of Native Americans and governed by Native Americans.