class: center, middle, inverse, title-slide .title[ # Oregon Population Forecast Program ] .subtitle[ ## Proposal Forecasts for Counties & UGBs ] .author[ ### Jefferson County ] .institute[ ### Portland State University Population Research Center ] .date[ ### March 2026 ] --- class: center # Comments or Questions? ## Contact PSUPRC Email: [askprc@pdx.edu](mailto:askprc@pdx.edu) Telephone: 503-725-3922 ## Proposal Population Projections https://www.pdx.edu/population-research/population-forecasts --- class: center # PSUPRC Project Team .pull-left[ **Huda Alkitkat, PhD.** *Population Estimates Manager* **Seth Dowden** *Research Assistant* **Neal Marquez, PhD.** *Population Forecast Manager* **Gilbert Montcho, PhD.** *Demographic & Labor Econ Analyst* **Scott Nordstrom, PhD.** *Post-Doctoral Researcher* ] .pull-right[ **Ethan Sharygin, PhD.** *Director* **Aja Sutton, PhD.** *Post-Doctoral Researcher* **David Swanson, PhD.** *Research Associate* **Suniva Thangaraj** *Program Manager* **Joshua Wilde, PhD.** *Research Scientist* ] --- # Jefferson County Outline - Introduction - Updates - County Overview - UGB Forecasts <style type="text/css"> .pulll-left { float: left; width: 20%; } .pulll-right { float: right; width: 68%; } </style> <style type="text/css"> .pux-left { float: left; width: 38%; } .pux-right { float: right; width: 58%; } </style> <style type="text/css"> .puz-left { float: left; width: 58%; } .puz-right { float: right; width: 38%; } </style> <style type="text/css"> .city table { font-size: 14px; } </style> --- # PSUPRC OPFP Population Forecasts .puz-left[ - For the purposes of land use planning PSUPRC generates population forecasts - For counties, urban growth boundaries (UGBs), and areas outside UGBs - These forecasts must - Be updated at least every four years - Cover a 50 year forecast horizon - Include most up to date data - Allow for public input/objections - Methods & results publicly available ] .puz-right[  ] --- # Oregon Population Forecast Program Cycle  --- # Methods Review: Cohort Component Method .pux-left[ - For Counties - Births = Females 15-50 * Birth Rate - Both number of and rate of births in OR decreasing - Deaths = All Population * Death Rate - While number of deaths are increasing rate of deaths decreasing - Migration = Past migration events - Average of past migration is most likely scenario moving forward ] .pux-right[  ] --- # Methods Review: Housing Unit Method .pull-left[ - For UGBs - `\(P_t = P_{t-1} + \Delta HU*PPH*OCC\)` - `\(PPH\)`: Persons per household - Estimated from most recent census data - `\(OCC\)`: Occupancy Rate - Estimated from most recent census data - `\(\Delta HU\)`: annual change in housing units - Modeled based on past housing unit growth trends ] .pull-right[  ] --- # After this meeting - Email for further follow up - March 30, 2026 forecast discussion period ends - Chance to formally appeal until May 15, 2026 - Will review appeals in the following week - No further changes will be made after May 22, 2026 - Reports and data tables will be available June 15, 2026 --- class: center, middle, inverse # Updates --- # Survey and Preliminary Meeting Feedback - Received housing and general survey responses from over 20 organizations - Updated GIS UGB boundary lines - Account for large public works alter housing development trajectories - Incorporate group quarter expansions - Adjusted housing unit productions - Housing build moratoriums - General concerns - Restrictions on development - Access to others responses --- # Incoporation of 2025 Certified Estimates  --- # Slowing Growth Across the State  --- # Changes in Vital Trends  --- # International Migration  --- # Domestic Mobility  --- class: center, middle, inverse # Jefferson County --- # Summary of Considerations - Population growth is slowing - Natural change has been on the decline - Net migration is still healthy - No changes made since December --- # Jefferson at a Glance: 2020 Census <table> <thead> <tr> <th style="text-align:left;"> Statistic </th> <th style="text-align:left;"> Jefferson </th> <th style="text-align:left;"> Oregon </th> </tr> </thead> <tbody> <tr> <td style="text-align:left;"> Total Population </td> <td style="text-align:left;"> 24,502 </td> <td style="text-align:left;"> 4,237,256 </td> </tr> <tr> <td style="text-align:left;"> Population Aged 0-17 </td> <td style="text-align:left;"> 23.15% </td> <td style="text-align:left;"> 20.20% </td> </tr> <tr> <td style="text-align:left;"> Population Aged 65+ </td> <td style="text-align:left;"> 19.58% </td> <td style="text-align:left;"> 18.25% </td> </tr> <tr> <td style="text-align:left;"> Population non-White </td> <td style="text-align:left;"> 34.73% </td> <td style="text-align:left;"> 23.41% </td> </tr> <tr> <td style="text-align:left;"> Persons per Household </td> <td style="text-align:left;"> 2.70 (10,250 units) </td> <td style="text-align:left;"> 2.48 (1,813,747 units) </td> </tr> </tbody> </table> --- # Jefferson Employment Changes
--- # Jefferson Migration Flows
--- # Jefferson Population .pulll-left[ Jefferson county is expected to growth in the forecast period, albeit at a slower rate then previously observed. ] .pulll-right[
] --- # Jefferson Compositional Changes .pulll-left[ Natural change has been on the decline leading to slower population growth. ] .pulll-right[
] --- # Jefferson Births .pulll-left[ Births have been on the decline, a trend that is expected to continue through teh forecast period. ] .pulll-right[
] --- # Jefferson Deaths .pulll-left[ Deaths are expected to increase as the population ages. ] .pulll-right[
] --- # Jefferson Life Expectancy & TFR <img src="Jefferson_files/figure-html/unnamed-chunk-12-1.png" width="750px" height="500px" /> --- # Population Pyramids .pulll-left[ Jefferson county is expected to continue to age, leading to a "top-heavy" population structure. ] .pulll-right[
] --- # Jefferson Race and Ethnicity .pulll-left[ The population is expected to continue to diversify, with strong growth seen among the Hispanic population. ] .pulll-right[
] --- # Jefferson UGB Population Changes <img src="Jefferson_files/figure-html/unnamed-chunk-15-1.png" width="850px" height="500px" /> --- class: city # Jefferson UGBs: Culver in Context .pux-right[ <img src="Jefferson_files/figure-html/unnamed-chunk-16-1.png" width="800px" height="400px" /> ] .pux-left[ <table> <thead> <tr> <th style="text-align:left;"> Metric </th> <th style="text-align:left;"> 1980 </th> <th style="text-align:left;"> 2000 </th> <th style="text-align:left;"> 2020 </th> </tr> </thead> <tbody> <tr> <td style="text-align:left;"> Pop 65+ </td> <td style="text-align:left;"> 6.61% </td> <td style="text-align:left;"> 11.10% </td> <td style="text-align:left;"> 10.24% </td> </tr> <tr> <td style="text-align:left;"> Housing Units </td> <td style="text-align:left;"> 185 </td> <td style="text-align:left;"> 275 </td> <td style="text-align:left;"> 561 </td> </tr> <tr> <td style="text-align:left;"> Housing Occupancy </td> <td style="text-align:left;"> 94.59% </td> <td style="text-align:left;"> 92.36% </td> <td style="text-align:left;"> 94.65% </td> </tr> <tr> <td style="text-align:left;"> Persons Per Household </td> <td style="text-align:left;"> 2.94 </td> <td style="text-align:left;"> 3.16 </td> <td style="text-align:left;"> 2.98 </td> </tr> <tr> <td style="text-align:left;"> Household Income </td> <td style="text-align:left;"> $14,653 </td> <td style="text-align:left;"> $31,667 </td> <td style="text-align:left;"> $81,534 </td> </tr> <tr> <td style="text-align:left;"> Employment Rate </td> <td style="text-align:left;"> 85.17% </td> <td style="text-align:left;"> 95.24% </td> <td style="text-align:left;"> 98.70% </td> </tr> </tbody> </table> ] --- # Jefferson County: Culver UGB Boundaries
--- # Culver UGB Pop Forecast <img src="Jefferson_files/figure-html/unnamed-chunk-19-1.png" width="750px" height="500px" /> --- # Culver UGB Pop Forecast <img src="Jefferson_files/figure-html/unnamed-chunk-20-1.png" width="750px" height="500px" /> --- class: city # Jefferson UGBs: Madras in Context .pux-right[ <img src="Jefferson_files/figure-html/unnamed-chunk-21-1.png" width="800px" height="400px" /> ] .pux-left[ <table> <thead> <tr> <th style="text-align:left;"> Metric </th> <th style="text-align:left;"> 1980 </th> <th style="text-align:left;"> 2000 </th> <th style="text-align:left;"> 2020 </th> </tr> </thead> <tbody> <tr> <td style="text-align:left;"> Pop 65+ </td> <td style="text-align:left;"> 14.63% </td> <td style="text-align:left;"> 10.52% </td> <td style="text-align:left;"> 12.94% </td> </tr> <tr> <td style="text-align:left;"> Housing Units </td> <td style="text-align:left;"> 953 </td> <td style="text-align:left;"> 1,952 </td> <td style="text-align:left;"> 2,878 </td> </tr> <tr> <td style="text-align:left;"> Housing Occupancy </td> <td style="text-align:left;"> 90.03% </td> <td style="text-align:left;"> 92.26% </td> <td style="text-align:left;"> 94.02% </td> </tr> <tr> <td style="text-align:left;"> Persons Per Household </td> <td style="text-align:left;"> 2.50 </td> <td style="text-align:left;"> 2.78 </td> <td style="text-align:left;"> 2.72 </td> </tr> <tr> <td style="text-align:left;"> Household Income </td> <td style="text-align:left;"> $12,489 </td> <td style="text-align:left;"> $29,103 </td> <td style="text-align:left;"> $52,500 </td> </tr> <tr> <td style="text-align:left;"> Employment Rate </td> <td style="text-align:left;"> 92.57% </td> <td style="text-align:left;"> 90.23% </td> <td style="text-align:left;"> 89.95% </td> </tr> </tbody> </table> ] --- # Jefferson County: Madras UGB Boundaries
--- # Madras UGB Pop Forecast <img src="Jefferson_files/figure-html/unnamed-chunk-24-1.png" width="750px" height="500px" /> --- # Madras UGB Pop Forecast <img src="Jefferson_files/figure-html/unnamed-chunk-25-1.png" width="750px" height="500px" /> --- class: city # Jefferson UGBs: Metolius in Context .pux-right[ <img src="Jefferson_files/figure-html/unnamed-chunk-26-1.png" width="800px" height="400px" /> ] .pux-left[ <table> <thead> <tr> <th style="text-align:left;"> Metric </th> <th style="text-align:left;"> 1980 </th> <th style="text-align:left;"> 2000 </th> <th style="text-align:left;"> 2020 </th> </tr> </thead> <tbody> <tr> <td style="text-align:left;"> Pop 65+ </td> <td style="text-align:left;"> 8.65% </td> <td style="text-align:left;"> 11.18% </td> <td style="text-align:left;"> 12.17% </td> </tr> <tr> <td style="text-align:left;"> Housing Units </td> <td style="text-align:left;"> 150 </td> <td style="text-align:left;"> 220 </td> <td style="text-align:left;"> 360 </td> </tr> <tr> <td style="text-align:left;"> Housing Occupancy </td> <td style="text-align:left;"> 96.00% </td> <td style="text-align:left;"> 97.27% </td> <td style="text-align:left;"> 93.89% </td> </tr> <tr> <td style="text-align:left;"> Persons Per Household </td> <td style="text-align:left;"> 3.13 </td> <td style="text-align:left;"> 2.97 </td> <td style="text-align:left;"> 2.89 </td> </tr> <tr> <td style="text-align:left;"> Household Income </td> <td style="text-align:left;"> $15,119 </td> <td style="text-align:left;"> $32,375 </td> <td style="text-align:left;"> $68,382 </td> </tr> <tr> <td style="text-align:left;"> Employment Rate </td> <td style="text-align:left;"> 87.37% </td> <td style="text-align:left;"> 86.00% </td> <td style="text-align:left;"> 96.56% </td> </tr> </tbody> </table> ] --- # Jefferson County: Metolius UGB Boundaries
--- # Metolius UGB Pop Forecast <img src="Jefferson_files/figure-html/unnamed-chunk-29-1.png" width="750px" height="500px" /> --- # Metolius UGB Pop Forecast <img src="Jefferson_files/figure-html/unnamed-chunk-30-1.png" width="750px" height="500px" /> --- class: center # Comments or Questions? ## Contact PSUPRC Email: [askprc@pdx.edu](mailto:askprc@pdx.edu) Telephone: 503-725-3922 ## Preliminary Population Projections https://www.pdx.edu/population-research/population-forecasts