The population count of King County, WA was 2,118,119 in 2017. The population count of Snohomish County, WA was 771,904 in 2017. The population count of Thurston County, WA was 269,885 in 2017.

Population

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 http://opendatanetwork.com. 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. http://opendatanetwork.com/region/1600000US5363000/Seattle_WA

Demographics and Population Datasets Involving Thurston County, WA or Snohomish County, WA or King County, WA

  • API

    WAOFM - Census - Population and Housing, 2000 and 2010

    data.wa.gov | Last Updated 2016-08-09T16:23:33.000Z

    Population and housing information extracted from decennial census Public Law 94-171 redistricting summary files for Washington state for years 2000 and 2010.

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    WAOFM - Census - Population Density by County by Decade, 1900 to 2010

    data.wa.gov | Last Updated 2016-08-09T16:28:24.000Z

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

  • API

    Washington Driver License In State Migration

    data.wa.gov | Last Updated 2019-01-03T23:56:56.000Z

    The number of drivers from other states and countries who were issued new Washington driver licenses and the county they moved to.

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    Poverty Estimates for Washington Counties Age 0-17

    data.wa.gov | Last Updated 2016-01-21T05:40:06.000Z

  • API

    Water Quality Index Scores (1994-2013) from The WA State Department of Ecology's River and Stream Monitoring Program.

    data.wa.gov | Last Updated 2014-05-01T22:58:16.000Z

    Routine freshwater monitoring data collected by the The WA State Department of Ecology's River and Stream Monitoring Program are summarized by a technique called the "Water Quality Index" (WQI). The WQI ranges from 1 (poor quality) to 100 (good quality). The WQI summary does not include non-standard elements like metals. For temperature, pH, oxygen, and fecal coliform bacteria, the WQI is based on criteria in Washington’s Water Quality Standards, WAC 173-201A. For nutrient and sediment measures where standards are not specific, results are based on expected conditions in a given region. Multiple constituents are combined and results aggregated over time to produce a single score for each station and each year.

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    Admissions to Juvenile Detention Related to a Status Offense

    data.wa.gov | Last Updated 2016-01-12T20:04:27.000Z

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    WDFW-Hatchery Programs

    data.wa.gov | Last Updated 2019-12-14T09:05:08.000Z

    A list of hatchery programs presented in the Salmon Conservation Reporting Engine (SCoRE)

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    Annual 2013 Water Quality Index Scores

    data.wa.gov | Last Updated 2014-11-18T18:28:21.000Z

    Routine freshwater monitoring data collected by the The WA State Department of Ecology's River and Stream Monitoring Program are summarized by a technique called the "Water Quality Index" (WQI). The WQI ranges from 1 (poor quality) to 100 (good quality). The WQI summary does not include non-standard elements like metals. For temperature, pH, oxygen, and fecal coliform bacteria, the WQI is based on criteria in Washington’s Water Quality Standards, WAC 173-201A. For nutrient and sediment measures where standards are not specific, results are based on expected conditions in a given region. Multiple constituents are combined and results aggregated over time to produce a single score for each station and each year.

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    Admissions to Juvenile Detention Related to a Status Offense By Status Offender Contempt Charge

    data.wa.gov | Last Updated 2016-01-12T20:03:25.000Z

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    VFC Enrollment 7.2018

    data.kingcounty.gov | Last Updated 2019-11-26T19:17:55.000Z

    Vaccines for Children (VFC) was established in 1993 to remove the barriers of cost and access to attaining childhood immunizations. The program is funded by the Centers for Disease Control and Prevention (CDC) and the State of Washington, and supplies vaccines to providers across the state. Most public and private health care providers who immunize children in King County are currently enrolled. All children from birth up to the 19th birthday are eligible to receive these vaccines. https://kingcounty.gov/depts/health/communicable-diseases/immunization/providers/vaccines-for-children.aspx