Population estimates are prepared as of July 1 of each year.

Preliminary estimates are released around November 15 each year; we send them to state and local jurisdictions and community partners and post them here.

Certified estimates are posted on December 15.

Supplemental reports are published quarterly, and are posted here two weeks after the end of each quarter. These reflect changes in population due to annexations and other revisions.

The annual Oregon Population Report is published in the following spring, usually by mid-April. The Report presents the population estimates for Oregon and its counties and incorporated cities. It contains ten tables, including the population rank for incorporated cities, the population by metropolitan areas, population for proportions of Oregon's incorporated cities that are located in more than one county, information on the annexed population added to incorporated cities, and estimates for the population by age and sex for counties.

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Submissions from 2016

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2015 Annual Population Report Tables (April 15, 2016), Portland State University. Population Research Center

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Estimates of Population Age Groups (ages under 18 yrs., 18-64 yrs., and 65 yrs. and over) for Oregon and Its Counties, July 1, 2015, Risa Proehl and Portland State University. Population Research Center

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Findings from the Preliminary 2016 Population Estimates, Risa Proehl and Portland State University. Population Research Center

Submissions from 2015

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2014 Annual Population Report Tables (April 22, 2015), Portland State University. Population Research Center

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Certified Population Estimates 2015, Portland State University. Population Research Center

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Summary of 2015 Estimates Findings, Based on Preliminary Estimates, Portland State University. Population Research Center

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Estimates of Population Age Groups (ages under 18 yrs., 18-64 yrs., and 65 yrs. and over) for Oregon and Its Counties, July 1, 2014, Portland State University. Population Research Center and Risa Proehl

Submissions from 2014

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2013 Annual Population Report Tables (April 15, 2014), Portland State University. Population Research Center

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Certified 2014 Population Estimates for Oregon and Counties, Portland State University. Population Research Center

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Estimates of Population Age Groups (ages under 18 yrs., 18-64 yrs., and 65 yrs. and over) for Oregon and Its Counties, July 1, 2013, Portland State University. Population Research Center and Risa Proehl

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Summary of 2014 Estimates Findings: Based on Preliminary Estimates, Risa S. Proehl

Submissions from 2013

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2012 Annual Population Report Tables (April 19, 2013), Portland State University. Population Research Center

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Certified 2013 Population Estimates for Oregon and Counties, Portland State University. Population Research Center

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Estimates of Population Age Groups (ages under 18 yrs., 18-64 yrs., and 65 yrs. and over) for Oregon and Its Counties, July 1, 2012, Portland State University. Population Research Center and Risa Proehl

Submissions from 2012

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2000-2010 Intercensal Estimates: Components of Population Change, Portland State University. Population Research Center

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2011 Annual Population Report Tables (March 28, 2012), Portland State University. Population Research Center

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Certified 2012 Population Estimates for Oregon and Its Counties, Portland State University. Population Research Center

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Estimates of Population Age Groups (ages under 18 yrs., 18-64 yrs., and 65 yrs. and over) for Oregon and Its Counties, July 1, 2011, Portland State University. Population Research Center and Risa Proehl

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Population Forecast for Yamhill County Oregon, its Cities and Unincorporated Area 2011-2035, Portland State University. Population Research Center, Risa S. Proehl, Vivian Siu, and Kevin Rancik

Submissions from 2011

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2000-2009 County Intercensal Estimates, Portland State University. Population Research Center

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2010 Annual Population Report (April 22, 2011), Portland State University. Population Research Center

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Certified 2011 Population Estimates for Oregon and Counties, Portland State University. Population Research Center

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Population Tables for State, Counties and Cities, Portland State University. Population Research Center

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2010 Oregon Revised Population Estimates, Portland State University. Population Research Center and Risa Proehl

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Population Forecasts for the Tri-City ServiceDistrict, Clackamas County Service District #1, Clackamas County Service District #1 with all Damascus, and the City of Milwaukie 2010-2040, Portland State University. Population Research Center, Risa S. Proehl, Kanhaiya Vaidya, Bimal RajBhandary, and Kevin Rancik

Submissions from 2010

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2000-2009 Intercensal Population Estimates by Age Group for Oregon and Counties, Portland State University. Population Research Center

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Estimates for Population Ages 4-20 Years for Oregon and Its Counties, Portland State University. Population Research Center and Risa Proehl

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Estimates of Population Age Groups (ages under 18 yrs., 18-64 yrs., and 65 yrs. and over) for Oregon and Its Counties, July 1, 2010, Portland State University. Population Research Center and Risa Proehl

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2009 Oregon Population Report, Portland State University. Population Research Center, Risa Proehl, and Julia Crain

Submissions from 2009

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2008 Oregon Population Report, Portland State University. Population Research Center, Risa Proehl, George C. Hough Jr., and Kathryn McGovern

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Population Forecast for Lane County, its Cities and Unincorporated Area 2008-2035, Portland State University. Population Research Center, Risa S. Proehl, George C. Hough Jr., Danan Ru, Kenneth Radin, and Mark Gilbert

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Population Forecast for Columbia County Oregon, its Cities and Unincorporated Area 2010-2030, Portland State University. Population Research Center, Charles Rynerson, and Kenneth Radin

Submissions from 2008

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2007 Oregon Population Report, Portland State University. Population Research Center, Risa Proehl, and George C. Hough Jr.

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Population Forecasts for Marion County, its Cities and Unincorporated Area 2010-2030, Portland State University. Population Research Center, Risa Proehl, Charles Rynerson, Kenneth Radin, and Joseph Smith-Buani

Submissions from 2007

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2006 Oregon Population Report, Portland State University. Population Research Center, Risa Proehl, and George C. Hough Jr.

Submissions from 2006

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2005 Oregon Population Tables, Portland State University. Population Research Center

Submissions from 2005

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2004 Oregon Population Report, Portland State University. Population Research Center, Qian Cai, Barry Edmonston, and George C. Hough Jr.

Submissions from 2004

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2003 Oregon Population Report, Portland State University. Population Research Center, Qian Cai, and George C. Hough Jr.

Submissions from 2003

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Population Growth in Oregon: 2000 to 2002, Portland State University. Population Research Center, Qian Cai, Barry Edmonston, and George C. Hough Jr.

Submissions from 2002

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2001 Oregon Population Report, Portland State University. Population Research Center, Qian Cai, and George C. Hough Jr.

Submissions from 2001

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2000 Oregon Population Report, Portland State University. Population Research Center, Qian Cai, Barry Edmonston, and George C. Hough Jr.

Submissions from 1975

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Population Estimates, Oregon Counties and Incorporated Cities, Portland State University. Center for Population Research and Census

Submissions from 1963

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Population Estimates of Counties and Incorporated Cities of Oregon, Portland State University. Population Research Center

Submissions from 1962

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Population Estimates of Counties and Incorporated Cities of Oregon, Portland State University. Population Research Center