Search Google Appliance

Redistricting Studies

PRC staff has accumulated extensive experience in local electoral and school redistricting. Usually, the need to redistrict (re-zone) existing boundaries arises when changes in service population take place.  These changes might be the result of a new school opening, or changes in an area's population and when the change is large enough the existing boundaries may no longer provide for fair electoral representation.

Download Oregon Electoral Districts Maps

Since July 2001 we have completed the redistricting (zoning) studies of Board of Directors (School Board) zones for the following clients:

  • Beaverton School District
  • Centennial School District
  • Gresham-Barlow School District
  • Lebanon School District
  • Linn-Benton-Lincoln ESD
  • McMinnville School District
  • Morrow County Schools
  • Mt. Hood Community College
  • Northwest Regional ESD
  • Portland Community College
  • Portland Public Schools

Oregon law mandates that boundaries of electoral districts be updated once the latest federal decennial census data becomes available. Currently such data is available down to the Census block level from the Census 2000 Redistricting Data (P.L. 94-171) Summary File. The law determines the zoning requirements for various kinds of electoral districts (e.g., Local Administration of Education, ORS 332.132, Zoning process).

We have worked with a number of Oregon school districts to help them design new school attendance area boundaries. Such projects frequently require that long-term attendance area enrollment forecasts be developed prior to redistricting decisions; they were completed for:

  • Beaverton School District
  • Hillsboro School District
  • Oswego School District
  • Tigard School District

Requesting studies:
The cost of the electoral redistricting studies largely depends on the availability of relevant boundary data in a digital form, and the number and complexity of redistricting scenarios and maps produced in the course of the study. When digitizing of paper maps to create desired boundaries (e.g., boundaries of existing Board zones, voting precincts, neighborhoods, school districts) is involved, the costs increase.

For more information or to request a study, please contact us at or telephone 503-725-3922.

Return to top