Maps and GIS data are an important component of SEMCOG’s planning efforts. The Map Catalog displays GIS data and statistics in map format. Some maps have additional information (i.e., metadata) and the ability to download the data in ESRI's shapefile format. Maps are divided into the following categories: Environment and Land Use, Demographic, Jurisdiction, and Transportation.
Source: Southeast Michigan Council of Governments (SEMCOG)
Time frame: (as of June 2010) Data from 1990-2009 with projections to 2035
Availabe at: http://www.semcog.org/data.aspx?id=246