This source of downloadable GIS shapefiles uses a mapping interface to identify your area of interest prior to selecting and downloading files. Note: some of the selections seemed a bit buggy on certain browsers, possible due to Java issues. (Jim P, 2009)
National Geophysical Data Center WMS (and other format) themes, generally with global extent (some restricted to U.S.). WMS URL is easy to obtain by clicking "wms" button next to each theme. (Jim P., July 2009)
Over 1000 WMS themes, most restricted to the U.S. (many for specific counties) but some international. The WMS URL is plainly given for each theme. (Jim P., July 2009)
The data contains different size circles to represent the Centers, which are part of the Region 2040 Concept Map. Centers are compact, mixed-use areas of high-density housing, employment, and retail that are pedestrian-oriented and well served by public tansportation and roads. | GIS_Data>ENVSData>Other_Sites>PDX_Metro>Planning>concept_centers
Shows all records for taxlots that have more than one record in the county Assessor's database. | GIS_Data>ENVSData>Other_Sites>PDX_Metro>Taxlots>tl_many
Spreadsheet of data attribute fields for multiple census shapefiles, with tabs at top for summary fields, 1970, 1980, 1990, and 2000. Note: some summary field calculations may not be available, and some may add up to >100%! Census data produced for LC ENVS by Portland State 2006-07; includes Portland Metro tri-counties (Multnomah, Clackamas, Washington). Separate shapefiles for each decade. | GIS_Data>ENVSData>Other_Sites>PDX_Metro>Non_RLIS>Demographic>1970-2000 (Jim Proctor Fall 2008)