Maps are a powerful way of visualizing health and social inequalities. Mapping can be used to present enormous datasets clearly and allow drill-down to local areas. Mapping can be used to describe population data such as, age, race, gender, ethnicity, housing, income, occupation, education, language spoken, marital status, housing value, and housing costs; health outcomes, as well as the natural, built, social and policy environments.
Geographic Information Systems (GIS) is a computer application used for storage, retrieval, mapping, and analysis of geographic data. It allows us to view, understand, question, interpret, and visualize data in many ways that reveal relationships, patterns, and trends in the form of maps and charts.