Welcome to the GIS Downloads page where you can search for and download geospatial data resources. We offer our downloadable layers in shapefile or CSV format compressed as zip files. This data is intended for use with Geographic Information Systems (GIS) software, a link to a free GIS data viewer can be found here. Please select a category from the drop down list below to see available downloads for that particular category. Please note that some of the downloads are large in file size and may take a while to download.