GIS format files are available for download. The file names and descriptions are listed below. GIS data updates on this webpage quarterly.
The files contained on this website or from the CD purchased at our front counters are in ESRI's shapefile format. You can use any of the ESRI's ArcGIS products, including the ArcGIS Explorer are free applications to read/open our shapefiles. Some of the free ESRI applications require you to register with ESRI for more information please visit ESRI website
You can also download the new ArcGIS Earth.