Zipcodes for King County and Surrounding Area

Metadata also available as - [Outline]

Frequently anticipated questions:

What does this data set describe?

Title: Zipcodes for King County and Surrounding Area
Abstract: Zip Code Boundaries for King, Pierce, Snohomish, Kitsap
Supplemental_Information: None
  1. How should this data set be cited?

    County, King, 20070228, Zipcodes for King County and Surrounding Area: King County, King County, WA.

    Online Links:

    Other_Citation_Details: None

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -123.071042
    East_Bounding_Coordinate: -119.899185
    North_Bounding_Coordinate: 48.309156
    South_Bounding_Coordinate: 46.711915

  3. What does it look like?

    <> (JPG)
    JPG File of layer overlain on base of WA counties or local cities

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: 12-Nov-2010
    Currentness_Reference: publication date

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: vector digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • GT-polygon composed of chains (203)

    2. What coordinate system is used to represent geographic features?

      The map projection used is NAD 1983 HARN StatePlane Washington North FIPS 4601 Feet.

      Projection parameters:
      Standard_Parallel: 47.5
      Standard_Parallel: 48.73333333333333
      Longitude_of_Central_Meridian: -120.8333333333333
      Latitude_of_Projection_Origin: 47.0
      False_Easting: 1640416.666666667
      False_Northing: 0.0

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.00025
      Ordinates (y-coordinates) are specified to the nearest 0.00025
      Planar coordinates are specified in foot_us

      The horizontal datum used is D North American 1983 HARN.
      The ellipsoid used is GRS 1980.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257222101.

  7. How does the data set describe geographic features?


    Five digit zipcode as number

    Range of values

    Five digit zipcode as string

    5 digit zip code as string

    Three digit county code

    033King County
    035Kitsap County
    053Pierce County
    061Snohomish County

    Feature Geometry (Source: ESRI)

    Coordinates defining the features

    Zipcode type

    PO BoxPost Office Box

    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.



    (Source: ESRI)

    Feature geometry. (Source: ESRI)

    Coordinates defining the features.



Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

  3. To whom should users address questions about the data?

    King County GIS Center
    Attn: Gavin Gray
    GIS Specialist
    201 S Jackson St, Suite 706
    Seattle, WA 98104

    206-263-4493 (voice)

Why was the data set created?

Outline zip codes in King County for analysis and display.

How was the data set created?

  1. From what previous works were the data drawn?

  2. How were the data generated, processed, and modified?

    Date: 25-Jul-2003 (process 1 of 7)
    Zipcode has been updated with January 2003 Postal Service Five Digit Zip Code maps and Washington State Department of Revenue Zip Code database.

    Date: 31-Jul-2008 (process 2 of 7)
    Dissolve by Zip, Zip Type, County.

    Date: 31-Jul-2008 (process 3 of 7)
    Overlay E-site data (point data combined with E911 and USPS addresses) on top of zipcode and parcel data layers. Modify zipcode polygon, divide into smaller polygon with carrier route ID and aline with parcel data.

    Data sources used in this process:

    • E911 (May 2007)

    Date: 20-Sep-2010 (process 4 of 7)
    Update Zip Codes for East King County using E-911 address point data. Zipcodes include 98010, 11, 14, 19, 22, 24, 25, 27, 29, 34, 38, 41, 45, 50, 51, 53, 65, 72, 74, 75, 77, 92

    Date: 12-Nov-2010 (process 5 of 7)
    Update Zip Codes for much of suburban King County using E-911 address point data. Zipcodes include 98001, 02, 03, 06, 28, 30, 31, 33, 39, 42, 47, 52, 55, 56, 57, 58, 59, 98146, 48, 58, 68, 78, 98354. Minor changes to 98003, 04, 07, 08, 11, 32, 40, 75, 77, 92, 98106, 08, 18, 88. Removed 98054 (obsolete).

    Date: 26-Jul-2011 (process 6 of 7)
    Updated 98011,98028,98074 and 98072, ZIP boundary change for Kirkland North Juanita Annexation. Updated 98031, 98055 and 98058, boundary change for Kent Panther Lake Annexation. Updated 98032 and 98198, western boundary of Kent along Pacific Hwy S.

    Date: 03-Jun-2013 (process 7 of 7)
    Removed a number of smaller polygons by merging into adjacent polygons, where the Zip codes were better represented as points.

  3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

  2. How accurate are the geographic locations?

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

  5. How consistent are the relationships among the observations, including topology?

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None
King County data are made available with the understanding that they shall be used exclusively by the obtainer or his/her authorized agents. Digital products may not be reproduced or redistributed in any form or by any means without the express written authorization of King County.

  1. Who distributes the data set? (Distributor 1 of 1)

    KCGIS Center
    Attn: Cheryl Wilder
    Data Sales Coordinator
    201 S Jackson St, Suite 700
    Seattle, WA 98104

    206-263-5220 (voice)

  2. What's the catalog number I need to order this data set?


  3. What legal disclaimers am I supposed to read?

    King County disclaims any warranty of use of any digital product or data beyond that for which it was designed.

  4. How can I download or order the data?

Who wrote the metadata?

Last modified: 10-May-2017
Metadata author:
King County GIS Center
Attn: Gavin Gray
GIS Specialist
201 S Jackson St, Suite 700
Seattle, WA 98104

206-263-4493 (voice)

Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

Generated by mp version 2.9.12 on Sat Apr 06 09:56:33 2019