Redistricting Data

Data

Redistricting Prototype Data from the 2008 Dress Rehearsal

On March 30, 2009, the Census Bureau's Redistricting Data Office released the 2008 Redistricting Data Prototype (Public Law (P.L.) 94-171). Released two years in advance of the 2010 Census Redistricting Data, the prototype was designed to provide states, the Department of Justice, vendors, and other stakeholders the opportunity to build their redistricting systems in preparation for the redistricting of congressional and state legislative district boundaries in 2011.

The prototype contains two discs:

1. The 2008 Redistricting Data Prototype (P.L. 94-171) Summary Files illustrate the proposed format and content of the redistricting data, including four population tables and one housing unit table down to the census block level.
2. The 2008 Redistricting Data Prototype (P.L. 94-171) Geographic Products  illustrate the proposed format and content of the geographic data, including congressional districts, state legislative districts, voting  districts, census tracts and census blocks. The following maps in PDF  format are available as well: County Block Maps, Voting District/State  Legislative District Reference Maps, Census Tract Reference Maps, and  School District Reference Maps.

Both the data and geography reflect information for San Joaquin County, California.

The P.L. Summary file extraction software has been reported to not function on certain Windows configurations. Should you encounter this problem, please use the following link for instructions and files to update the extraction software. This update also includes a 64 bit computer compatibility update.
Redistricting Data Prototype (P.L. 94-171) Summary File Extraction Software Update

For further information or a copy of the prototype, please call the Census Redistricting Data Office at (301) 763-4039.