LibGuides: Maps: GIS and Map Data

Map Data Links

EPA - Environmental Protection Agency
GIS and Spatial data from the Environmental Protection Agency.
ESRI
Free tools are on the left side under "Create and Share Maps"
Harvard
Contains multiple catagories, you can also view data using an online map before downloading.
iTouch Map
Mobile and Desktop maps
National Historical GIS
Aggregate census data and GIS-compatible boundary files for the United States between 1790 and 2000.
Public Utilities Commission of Ohio Utility Maps
Statewide Digital Data Maps and downloadable shapefiles for a variety of information including schools railroads and telephone utility data and much more
Map Portal Switzerland
Search tool for maps held by the Swiss Library and Archives.
University of Minnesota Data Page
Data links page by the University of Minnesota.
US Census Geography Program
Mapping files, reference maps, and other reference files.
National Map - from the USGS