Oregon -- Population -- Statistics, Demographic surveys -- Oregon
Estimates of population age groups for Oregon and its counties.
Portland State University. Population Research Center and Proehl, Risa, "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" (2012). Oregon Population Estimates and Reports. 36.