Public Land Survey System
This is maybe a little simplistic and probably less interesting as it becomes less current, but it's a map of what happened where and when during the 35-W bridge collapse, with links to pictures and more information.
Interactive map with different environmental layers. Searchable by zipcode, city, or latitude/longitude.
This is a post in a forum about bike routes in Minnesota. Included are a list of several resources, including the links to the bike route maps from the DoT, which aren't easily accessible from the main DoT page.
Map site from the Dept. of Administration showing census data from 1990. This site contains two groups of maps - Minnesota Ancestry by township and Nationwide Ancestry by county.
This is a list of resources, mostly aimed at K-12 students with basic facts and information about Minnesota. Included in the maps are:
Custom Map Maker, a utility where you can select different groups of counties, color code them, and create a map.
Interactive Minnesota Battle Map, an interactive map which shows different locations of historic battles in Minnesota and links to more information about the battles
More maps and map resources are also included.
Different interactive maps developed with the Mapserver program. Compiled by UMN Remote Sensing and Geospatial Analysis laboratory
A series of interactive maps originally created for non-profits and political organizations. Details voter registration, election results in 2000 and 2004, and census data. There are also voter registration and turnout pdf files for all Minnesota towns above 15,000 population.
The link above is for Minnesota, although other states are represented on the site as well. While the map itself isn't from a government source, all of the data seems to be cited from various government agencies.
This site from the Dept of Commerce details long term wind patterns in Minnesota. Included are both map images and GIS data.