The population count of Washington County, OR was 547,451 in 2014.


Population Change

Above charts are based on data from the U.S. Census American Community Survey | ODN Dataset | API - Notes:

1. ODN datasets and APIs are subject to change and may differ in format from the original source data in order to provide a user-friendly experience on this site.

2. To build your own apps using this data, see the ODN Dataset and API links.

3. If you use this derived data in an app, we ask that you provide a link somewhere in your applications to the Open Data Network with a citation that states: "Data for this application was provided by the Open Data Network" where "Open Data Network" links to Where an application has a region specific module, we ask that you add an additional line that states: "Data about REGIONX was provided by the Open Data Network." where REGIONX is an HREF with a name for a geographical region like "Seattle, WA" and the link points to this page URL, e.g.

Demographics and Population Datasets Involving Washington County, OR

  • API

    Oregon Populated Places | Last Updated 2013-03-01T18:12:24.000Z

    This point theme shows the location of populated places in the state of Oregon as derived from the 1:24,000 GNIS theme. This dataset was created from the USGS GNIS database. Several SSCGIS staff members have worked on this theme over the years. Procedures_Used: The orppl theme was delineted from the 1990 GNIS theme. To get an idea how this coverage was created download the GNIS metadata. The orppl point theme was generated as the orcov theme. It was built for point topology after the theme was generated. it was than copied to oregnis. Arcedit was used to populate the coverage by selecting ppl from the desig item. The theme was again built for point topology. the theme was imported in 1991 and copied to the gniscov name. External was used 5 times to populate the database. the theme was then exported as gniscov. The gniscov was edited and built for point topology. Reselect was used twice. ArcEdit was used 6 times to edit the theme and than renamed to orppl. The theme was than built for point topology. The theme was than copied twice. One of these copies ws overlayed with house90 using the identity using the point .1 fuzzy tolerance and join options to join the two themes together. The theme was than copied to another directory. In the new directory the theme was edited 7 times and build for point topology. The theme was than renamed orppl and copied two more times. The theme was exported twice and built once between 1993 and 1995. The Projectcopy command was used to copy the projection info from the citylimits theme to the orppl. The theme was than exported twice and imported back in to be projected into the Oregon State transfer standard. The theme was built for point topology and imported back in so that metadata could be created for it.

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    Medicare Beneficiary Enrollment and Demographics, Washington State and Counties, 2007-2014 | Last Updated 2016-05-16T23:56:57.000Z

    (Source: CMS Medicare Geographic Variation Public Use File, December 2015)

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    WA By The Numbers: Property Tax By City | Last Updated 2015-07-06T22:18:10.000Z

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    Motorboat Restrictions in Oregon | Last Updated 2013-06-24T23:47:25.000Z

    Waterbodies where the use of motors are prohibited. Waterways where motor boats are not allowed are established in Oregon Administrative Rule 250 or Oregon Statute 830.

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    WAOFM - Census - Population Density by County by Decade, 1900 to 2010 | Last Updated 2016-08-09T16:28:24.000Z

    Washington state population density by county by decade 1900 to 2010.

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    "Electric Motor Only" Waterways in Oregon | Last Updated 2013-05-07T21:26:32.000Z

    Some waterbodies in Oregon have been designated "electric motor only" by Oregon Administrative Rule or statute. These waterbodies have been designated based on their topography, size and traditional boating uses.

  • API

    Maryland Median Household Income By Year With Margin Of Error: 2005-2011 | Last Updated 2016-11-30T16:10:35.000Z

    The data consist of the median household income by the year in Maryland and the margin of error of the median income from 2005 to 2011. MOE= Margin of Error for the 90% confidence interval. Source from the U.S. Census Bureau, Small Area Income and Poverty Estimates, May 2012.

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    WA By The Numbers: Businesses By City | Last Updated 2015-07-06T22:18:09.000Z

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    WA By The Numbers - Revenue Breakdown By City | Last Updated 2015-07-06T22:17:49.000Z

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    Maryland Total Change in Resident Population: 2000-2013 | Last Updated 2016-11-30T14:37:56.000Z

    Total Change in Resident Population in Maryland and its Jurisdictions by year from 2000 to 2013