How to use boundary data
Boundary files provide the foundation for most mapping and GIS projects. Political, administrative and postal code boundaries, for example, provide context, along with other data such as street network data or points of interest. Boundary files may also include additional information such as the area of the boundary, its population, average income, or household composition. When used with a desktop mapping software solution, users can create thematic maps such as sales by ZIP code or population by Census Tract.