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Oregon Population Forecast Program (OPFP)

Beginning in 1973 with the passage of Senate Bill (SB) 100, Oregon’s growth management system has relied on population forecasts as the primary tool for determining Urban Growth Boundary (UGB) expansions, as well as for crafting planning policy. By estimating future populations based on historic and current trends, as well as assuming the likelihood of future events, population forecasts provide necessary information to help planners, public officials, private firms, and developers better understand the short and long-term implications of population growth in local areas.  

In the recent past, Oregon law required that counties prepare coordinated population forecasts according to "generally accepted" demographic methods, which yielded forecasts produced with a highly diverse set of methods. Equally important, the prohibitive cost of forecasting meant that not all communities could update their forecasts on a regular basis.  Recognizing the need to be more responsive to accounting for current population trends by preparing population forecasts on a more regular basis, and with a consistent forecast methodology for communities across the state, the Oregon House of Representatives and Senate approved legislation in 2013 assigning coordinated population forecasting to the Population Research Center (PRC) at Portland State University (PSU).

Proposed Coordinated Population Forecasts 

  • Proposed forecasts are now available for counties in Region 1. Click here to view/download them.

  • For more information about the Proposed Coordinated Forecast Review Process, click here.

  • To file an appeal to the Proposed Coordinated Forecasts during the 45-day Review Period (April 1 through May 15), click here.

Background of the Oregon Population Forecast Program

  • To view or download a more detailed description of the program, click here.

  • For the Oregon Administrative Rules (OARs) pertaining to the program, click here.

  • For answers to frequently asked questions (FAQs), click here.

Questions?

If you have questions for any of the project's team members, contact Deborah Loftus at 503-725-5101 or e-mail us at: askprc@pdx.edu.

    REGION 1: Coos, Crook, Curry, Deschutes, Douglas, Jackson, Jefferson, Josephine, Klamath, and Lane counties. July 2014-June 2015. 

    REGION 2: Baker, Gilliam, Grant, Harney, Hood River, Lake, Malheur, Morrow, Sherman, Umatilla, Union, Wallowa, Wasco, and Wheeler counties. July 2015-June 2016.

    REGION 3: Benton, Clackamas, Clatsop, Columbia, Linn, Lincoln, Marion, Multnomah, Polk, Tillamook, Washington, and Yamhill counties. July 2016-June 2017.

    To view or download a larger version of this map, click here.