| Population Statistics for Oregon |
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Click on this link to retrieve an Excel spreadsheet which contains population data for Oregon counties by age groups for the years 1984-2000. The original estimates for 1991 to 1999 are estimates based on the 1990 U.S. Census Bureau figures, and are included as separate worksheets named by the year. The first worksheet contains estimates adjusted to reflect the results of Census 2000. The data from 1984-1989 are from reports housed at the Oregon State Library, and may not reflect the most recent adjustments, so care should be exercised in using this data. All estimates were developed by the Portland State University Population Research Center. The Population Research Center (PRC) is the "Official" source for all State of Oregon Population information.
The "summary" worksheet provides data by means of links to the remainder of the pages, each of which provides population data for one year. For 1998 to 2000, populations by gender are also given. The data for those years was received in electronic format, while the data for the earlier years was converted from printed documents.
Finally, please note that not all years are provided in the same format, and age groupings are not always consistent in these worksheets.
Also available here is a spreadsheet with total and juvenile populations by county, race, and ethnicity. This data is derived from the April 1, 2000, U.S. Census Bureau count, and is adjusted according to a method described in the file to reflect "intuitive" assignments of people to mutually exclusive categories of "White," "Black," "American Indian," "Asian," or "Hispanic." This data is used elsewhere to compare to law enforcement reports of people stopped, arrested, or incarcerated. Any such method is by its nature arbitrary, and can not fully reflect the racial and ethnic diversity of the entire population. It should also be noted that the Census Bureau does not provide a race category for Latin Americans of native descent. Hence, approximately half of the Hispanic population of Oregon chose "Other" as their race, and most of the remainder chose "White."
The federal Office of Management and Budget has provided some additional guidance on interpreting the race categories of Census Bureau data. Two distinct approaches are considered: allocating multi-racial responses to single race categories for the purposes of assessing disparate treatment (similar to the method we adopt here), and adopting "bridging" methods for interpreting serial data spanning the new and old race categories. Unlike the data reported by law enforcement agencies, however, both methods consider ethnicity (limited to Hispanic or Non-Hispanic) and race to be separate categories. Both methods also ignore the "Other" race category, which, as noted above, comprises a substantial proportion of the population of Oregon.
The Office of Juvenile Justice and Delinquency Prevention and other federal agencies have encouraged the development of a data source using the bridging methods mentioned above. The result has been a cooperative effort by the National Center for Health Statistics at the Centers for Disease Control and Prevention and the Census Bureau. This goes beyond any of the bridging methods considered above, using data from the National Health Interview Survey. The latter survey is unique in that it asks respondents who list multiple races to indicate which is their "primary" race. Bridged estimates for the five single-race/ethnicity categories of White, Black or African American, American Indian or Alaska Native, Asian (including Native Hawaiian or Other Pacific Islander), and Hispanic or Latino were derived from Census Bureau estimates by applying regression techniques to the proportions of multi-racial respondents indicating a primary race. Populations of the relevant age groups for Oregon and its counties are provided here in an Excel spreadsheet. The model used evolves as more data becomes available, so it is expected that these estimates will change with the release of 1 July 2004 estimates in 2005. Further information on how the data was derived is available from NCHS (in PDF format).
Last update: 22 October 2004
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