Wisconsin currently does not have a single, statewide geospatial data download site. Data are available from a variety of local, state, and federal sources. The following list is not comprehensive; it is intended as a starting place for the most commonly-requested geospatial datasets.
Wisconsin GIS data from municipalities, counties and state agencies housed within the UW-Madison Map Library are available for direct download via GeoData@Wisconsin. (Some data may be restricted for educational use only.) Additional data can be requested by contacting the Robinson Map Library.