GIS Shapefiles

Last Updated: 
May 4, 2016

GIS shapefiles of regional planning boundaries, census geographies, and PSRC forecasting zones.

A shapefile is a data storage format for storing the location, shape, and attributes of geographic features. It is stored as a set of related files and contains one feature class. Download a free copy of ESRI ArcGIS Explorer Desktop for viewing shapefiles.

Assets

Land Use Planning Boundaries

Bike & Pedestrian

Census Tract - 1990

Census Tract - 2000

Census Tract - 2010

Census Block Group - 1990

Census Block Group - 2000

Census Block Group - 2010

Census Block - 1990

Census Block - 2000

Census Block - 2010

Census PUMA 2000 Region

Census PUMA 2010 Region

Forecast Analysis Zone (FAZ) - 1991

Forecast Analysis Zone (FAZ) - 2000

Forecast Analysis Zone (FAZ) - 2010

Traffic Analysis Zone - 1991

Traffic Analysis Zone - 2000

Traffic Analysis Zone - 2010

Frequently Asked Questions

What is a Census Tract?

Census tracts are small, relatively permanent statistical subdivisions of a county. The U.S. Census Bureau uses the census tract geographic boundary system to collect, tabulate, and present decennial census and other data. Census tracts generally have between 1,500 and 8,000 residents. There are a total of 772 census tracts in the region.

What is a Census Designated Place (CDP)?

CDPs are unincorporated communities that are identifiable by name, with concentrations of population, housing and commercial structures. They are delineated for each decennial census for reporting purposes, and are the statistical counterparts of incorporated municipalities. CDP boundaries may change from one decennial census to the next.

What is a PUMA?

A public use microdata area (PUMA) is a decennial census area for which the U.S. Census Bureau provides specially selected extracts of raw data from a small sample (5-percent) of population and housing unit records from the American Community Survey that are screened to protect confidentiality. These extracts are referred to as “public use microdata sample (PUMS)” files and they allow data users to create their own statistical tabulations and data summaries. PUMAs are delineated uniquely within each state and comprise areas that contain at least 100,000 people.

What is a Forecast Analysis Zone (FAZ)?

FAZs are the units of the geographic boundary system used by the PSRC to model and report its small area Forecasts of Population, Households, and Employment. They are built up from traffic analysis zones (TAZs), with each FAZ containing between 1 to 20 TAZs. FAZboundaries generally, with few exceptions, also line up with census tract boundaries, with each FAZ containing between 1 to 9 census tracts. There are a total of 219 FAZs in the region.

What is a Traffic Analysis Zone (TAZ)?

TAZs are the units of the geographic boundary system used by the PSRC to run and report results from its Travel Demand Forecast Model. The TAZs nest within a larger Forecast Analysis Zone (FAZ) geographic boundary system, with each FAZ containing between 1 and 20 TAZs. TAZ boundaries generally, with few exceptions, also line up with census tract boundaries, with each census tract containing between 1 to 9 TAZs. There are a total of 938 TAZs in the region.