Population pyramids are commonly used to describe a population’s basic structure. They require data on gender and age. Data are organized into 5-year age cohorts; male and female. Each population pyramid provides a snapshot of the distribution of age groups and gender. This measure provides evidence of community sustainability by indicating key characteristics of social organization as they relate to providing social and economic services within a community. A population pyramid that varies little from the youngest to the oldest cohorts is considered to be sustainable.