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The population count of Clackamas County, OR was 405,788 in 2018. The population count of Clark County, WA was 465,384 in 2018. The population count of Pierce County, WA was 859,840 in 2018.

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 Clark County, WA or Clackamas County, OR or Pierce County, WA

  • API

    WAOFM - Census - Population and Housing, 2000 and 2010

    data.wa.gov | Last Updated 2021-09-01T17:20:31.000Z

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

  • API

    WAOFM - Census - Population Density by County by Decade, 1900 to 2020

    data.wa.gov | Last Updated 2023-07-06T16:48:57.000Z

    Washington state population density by county by decade 1900 to 2020.

  • API

    Pierce County, WA -- COVID Risk Index Score

    internal.open.piercecountywa.gov | Last Updated 2020-05-26T22:54:57.000Z

    Population over 60 (S0101), Women Who Had a Birth in the Past 12 Months (B13002), Below Poverty Level (B17015), No Health Insurance (B27001), Household Receiving SNAP Assistance (S2201), No Internet Access (B28002), Total Population (B01003) and Language at Home (C16001)

  • API

    Demographic - Population Percent by Sex by County WA

    internal.open.piercecountywa.gov | Last Updated 2024-05-30T17:02:48.000Z

    Population estimates for percentage of males and females in an area.(DP05, variables: DP05_0001E, DP05_0002E, DP05_0003E). County and State values are from the ACS 1 Year Survey.

  • API

    Demographic Birth and Death by County WA

    internal.open.piercecountywa.gov | Last Updated 2024-06-14T22:59:16.000Z

    Data from the Department of Health, who collects information on pregnancy and delivery in Washington State from birth certificates, and information on deaths in Washington State from death certificates. Occurrence of birth in each residence county represents all births to residents of each county regardless of where the birth occurred. Occurrence of death in each residence county represents all deaths to residents of each county regardless of where the death occurred.

  • API

    Economic Poverty Rate by County WA

    internal.open.piercecountywa.gov | Last Updated 2024-06-11T16:35:54.000Z

    Count and rate of population with income in the last 12 months below poverty level in an area. ( B17001). County and State values are from ACS 1-year survey.

  • API

    American Community Survey 5 Year Estimates - Pierce County, WA

    internal.open.piercecountywa.gov | Last Updated 2024-06-14T17:03:34.000Z

    Population over 60 (S0101), Women Who Had a Birth in the Past 12 Months (B13002), Below Poverty Level (B17015), No Health Insurance (B27001), Household Receiving SNAP Assistance (S2201), No Internet Access (B28002), Total Population (B01003) and Language at Home (C16001)

  • API

    Demographic Median Age by County WA

    internal.open.piercecountywa.gov | Last Updated 2024-06-11T16:14:17.000Z

    Median Age: The middle value of age for a total population, males, and females in an area.(B01002). County and State values are from the ACS 1 Year Survey.

  • API

    Demographic - Population Percent by Race Ethnicity (AsianPacific)by County WA

    internal.open.piercecountywa.gov | Last Updated 2024-06-13T18:14:02.000Z

    ACS1 data, with Asian and Pacific Islander combined

  • API

    Educational Attainment of Washington Population by Age, Race/Ethnicity/, and PUMA Region

    data.wa.gov | Last Updated 2019-05-16T19:13:48.000Z

    The American Community Survey (ACS) is designed to estimate the characteristic distribution of populations* and estimated counts should only be used to calculate percentages. They do not represent the actual population counts or totals. Beginning in 2019, the Washington Student Achievement Council (WSAC) has measured educational attainment for the Roadmap Progress Report using one-year American Community Survey (ACS) data from the United States Census Bureau. These public microdata represents the most current data, but it is limited to areas with larger populations leading to some multi-county regions**. *The American Community Survey is not the official source of population counts. It is designed to show the characteristics of the nation's population and should not be used as actual population counts or housing totals for the nation, states or counties. The official population count — including population by age, sex, race and Hispanic origin — comes from the once-a-decade census, supplemented by annual population estimates (which do not typically contain educational attainment variables) from the following groups and surveys: -- Washington State Office of Financial Management (OFM): https://www.ofm.wa.gov/washington-data-research/population-demographics -- US Census Decennial Census: https://www.census.gov/programs-surveys/decennial-census.html and Population Estimates Program: https://www.census.gov/programs-surveys/popest.html **In prior years, WSAC used both the five-year and three-year (now discontinued) data. While the 5-year estimates provide a larger sample, they are not recommended for year to year trends and also are released later than the one-year files. Detailed information about the ACS at https://www.census.gov/programs-surveys/acs/guidance.html