55 datasets found
  1. a

    PLSS Line

    • snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com
    Updated Jun 26, 2025
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    Snohomish County (2025). PLSS Line [Dataset]. https://snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com/datasets/plss-line
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    Dataset updated
    Jun 26, 2025
    Dataset authored and provided by
    Snohomish County
    Area covered
    Description

    The Public Land Survey System (PLSS) Grid - Line is linework derived from the master coverage of the PLSS maintained by the Assessor's Office. This dataset only contains linework and attribute information for townships, ranges, sections, quarter sections and quarter quarter sections and government lot lines. It is compiled from recorded surveys and plats, coordinates and linework supplied by private surveyors, Snohomish County Public Works Survey, cities, Washington State Department Of Natural Resources (DNR) and the United States Department of the Interior - Bureau of Land Management (BLM). Standard BLM methods are used to construct the aliquot grid. In coastal areas, the aliquot grid may not apply for many of the coastal sections, it has been constructed for the purposes of land title and defining map extents for automated routines.

  2. a

    PLSS Polygon

    • snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com
    Updated Jun 12, 2025
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    Snohomish County (2025). PLSS Polygon [Dataset]. https://snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com/datasets/snoco-gis::plss-polygon/about
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    Dataset updated
    Jun 12, 2025
    Dataset authored and provided by
    Snohomish County
    Area covered
    Description

    The Public Land Survey System (PLSS) Grid - Polygon are polygons derived from the master coverage of the PLSS maintained by the Assessor's Office. This dataset only contains polygon information. It contains polygons mostly at a quarter quarter section resolution except in certain non-urban areas where a lower full section resolution or hybrid is used. It is compiled from recorded surveys and plats, coordinates and linework supplied by private surveyors, Snohomish County Public Works Survey, cities, Washington State Department Of Natural Resources (DNR) and the United States Department of the Interior - Bureau of Land Management (BLM). Standard BLM methods are used to construct the aliquot grid. In coastal areas, the aliquot grid may not apply for many of the coastal sections, it has been constructed for the purposes of land title and defining map extents for automated routines.

  3. a

    Parcel Map Page Index

    • snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com
    Updated Jun 18, 2025
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    Snohomish County (2025). Parcel Map Page Index [Dataset]. https://snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com/datasets/snoco-gis::parcel-map-page-index
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    Dataset updated
    Jun 18, 2025
    Dataset authored and provided by
    Snohomish County
    Area covered
    Description

    Data DictionaryPageIndex_Poly represents the bounds of the Snohomish County Assessor’s tax Parcel Maps and is used as the index layer in Esri’s Data Driven Pages tool to automate Parcel Map generation. PageIndex_Poly is maintained as part of the County’s Integrated Land Records database and is based on the Public Land Survey System representing Sections and Quarter Sections. It is derived from the PLSS_Poly dataset and regenerated every few years to keep up with increasing tax parcel density. At the time of generation, Section Maps are converted into Quarter Section Maps when the unstacked (flattened) tax parcel count is greater than or equal to 150 per section.

  4. K

    Snohomish County, WA Sub-basins

    • koordinates.com
    csv, dwg, geodatabase +6
    Updated Oct 3, 2018
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    Snohomish County, Washington (2018). Snohomish County, WA Sub-basins [Dataset]. https://koordinates.com/layer/98133-snohomish-county-wa-sub-basins/
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    pdf, shapefile, csv, geodatabase, mapinfo mif, mapinfo tab, geopackage / sqlite, kml, dwgAvailable download formats
    Dataset updated
    Oct 3, 2018
    Dataset authored and provided by
    Snohomish County, Washington
    Area covered
    Description

    Geospatial data about Snohomish County, WA Sub-basins. Export to CAD, GIS, PDF, CSV and access via API.

  5. K

    Snohomish County, WA Zip Codes

    • koordinates.com
    csv, dwg, geodatabase +6
    Updated Oct 3, 2018
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    Snohomish County, Washington (2018). Snohomish County, WA Zip Codes [Dataset]. https://koordinates.com/layer/98144-snohomish-county-wa-zip-codes/
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    mapinfo tab, geodatabase, kml, pdf, dwg, shapefile, mapinfo mif, csv, geopackage / sqliteAvailable download formats
    Dataset updated
    Oct 3, 2018
    Dataset authored and provided by
    Snohomish County, Washington
    Area covered
    Description

    Geospatial data about Snohomish County, WA Zip Codes. Export to CAD, GIS, PDF, CSV and access via API.

  6. a

    All Parcels (Past and Present)

    • snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com
    Updated Jun 12, 2025
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    Snohomish County (2025). All Parcels (Past and Present) [Dataset]. https://snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com/datasets/all-parcels-past-and-present
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    Dataset updated
    Jun 12, 2025
    Dataset authored and provided by
    Snohomish County
    Area covered
    Description

    Data DictionaryThe Allparcels data set is a thematic layer depicting past, present and future tax year real property parcel boundaries within Snohomish County, Washington based on the legal descriptions contained in the assessment roll. Parcels in this data set are defined as real property entities that can be valued for the purpose of collecting taxes. Parcels include, but are not limited to land, buildings on leased land, mobile homes and condominium units. Parcels may overlap. Parcels such as condominium units and mobile homes that may occupy a single polygon are represented as non-planar features (regions) of the same geographic extent. The Parcels data set does not depict legal ownership boundaries nor does it represent legal building lots. Snohomish County does not maintain parcels for the complete geographic coverage of the county. There is no parcel fabric in much of the eastern mountainous area. This data set is not designed to be used in connection with tabular attribute files. Its sole purpose is for historical tracking of changes in the parcel geometry. For current parcel geometry and tabular attributes, see the Parcels data set.

  7. K

    Snohomish County, WA Major Roads

    • koordinates.com
    csv, dwg, geodatabase +6
    Updated Oct 3, 2018
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    Snohomish County, Washington (2018). Snohomish County, WA Major Roads [Dataset]. https://koordinates.com/layer/98153-snohomish-county-wa-major-roads/
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    shapefile, pdf, mapinfo tab, kml, geodatabase, geopackage / sqlite, mapinfo mif, dwg, csvAvailable download formats
    Dataset updated
    Oct 3, 2018
    Dataset authored and provided by
    Snohomish County, Washington
    Area covered
    Description

    Geospatial data about Snohomish County, WA Major Roads. Export to CAD, GIS, PDF, CSV and access via API.

  8. a

    Sections

    • snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com
    Updated Jun 26, 2025
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    Snohomish County (2025). Sections [Dataset]. https://snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com/datasets/sections
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    Dataset updated
    Jun 26, 2025
    Dataset authored and provided by
    Snohomish County
    Area covered
    Description

    This polygon dataset is a compilation of all the sections in Snohomish County derived from the Public Land Survey System (PLSS) grid dataset. The PLSS grid is the master coverage of the PLSS maintained by the Assessor's Office. It contains linework and attribute information for townships, ranges, sections, quarter sections and quarter quarter sections. It is compiled from recorded surveys and plats, coordinates and linework supplied by private surveyors, Snohomish County Public Works Survey, cities, Washington State Department Of Natural Resources (DNR) and the United States Department of the Interior - Bureau of Land Management (BLM). Standard BLM methods are used to construct the aliquot grid. In coastal areas, the aliquot grid may not apply for many of the coastal sections, it has been constructed for the purposes of land title and defining map extents for automated routines.

  9. K

    Snohomish County, WA Voter Precincts

    • koordinates.com
    csv, dwg, geodatabase +6
    Updated Oct 3, 2018
    + more versions
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    Snohomish County, Washington (2018). Snohomish County, WA Voter Precincts [Dataset]. https://koordinates.com/layer/98138-snohomish-county-wa-voter-precincts/
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    dwg, geopackage / sqlite, geodatabase, pdf, mapinfo tab, shapefile, mapinfo mif, csv, kmlAvailable download formats
    Dataset updated
    Oct 3, 2018
    Dataset authored and provided by
    Snohomish County, Washington
    Area covered
    Description

    Geospatial data about Snohomish County, WA Voter Precincts. Export to CAD, GIS, PDF, CSV and access via API.

  10. K

    Snohomish County, WA Rivers, Lakes, and Marine Waters

    • koordinates.com
    csv, dwg, geodatabase +6
    Updated Oct 3, 2018
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    Snohomish County, Washington (2018). Snohomish County, WA Rivers, Lakes, and Marine Waters [Dataset]. https://koordinates.com/layer/98134-snohomish-county-wa-rivers-lakes-and-marine-waters/
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    dwg, mapinfo mif, geopackage / sqlite, geodatabase, shapefile, kml, mapinfo tab, csv, pdfAvailable download formats
    Dataset updated
    Oct 3, 2018
    Dataset authored and provided by
    Snohomish County, Washington
    Area covered
    Description

    Geospatial data about Snohomish County, WA Rivers, Lakes, and Marine Waters. Export to CAD, GIS, PDF, CSV and access via API.

  11. a

    Districts Fire

    • snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com
    Updated Jun 6, 2007
    + more versions
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    Snohomish County (2007). Districts Fire [Dataset]. https://snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com/datasets/districts-fire
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    Dataset updated
    Jun 6, 2007
    Dataset authored and provided by
    Snohomish County
    Area covered
    Description

    This data set is a compliation of fire districts and regional fire authorities in Snohomish County. The boundaries were compiled from fire_annex dataset that tracks each annexation. Spatial registration conforms to features in the Snohomish County parcel data set.

  12. a

    Snohomish County Improvement Records

    • snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com
    Updated Aug 8, 2023
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    Snohomish County (2023). Snohomish County Improvement Records [Dataset]. https://snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com/documents/3c5edc985cec4fba8b3938d16ed1d3c3
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    Dataset updated
    Aug 8, 2023
    Dataset authored and provided by
    Snohomish County
    Area covered
    Snohomish County
    Description

    The Improvements Record file is a record of structure improvements made to a property, including initial construction, renovations, additions, and repairs. This file contains the parcel number, Use Code description, improvement type, year built, and other features and dates related to the property's improvements.

  13. a

    SMP shorelinedesignation

    • snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com
    Updated Aug 1, 2019
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    Snohomish County (2019). SMP shorelinedesignation [Dataset]. https://snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com/datasets/smp-shorelinedesignation/about
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    Dataset updated
    Aug 1, 2019
    Dataset authored and provided by
    Snohomish County
    Area covered
    Description

    These data represent the spatial distribution of the Snohomish County Shoreline Management Program - Shoreline Environmental Designations as adopted by Snohomish County Council Amended Ordinance 19-020 on July 3, 2019. These designations and the accompanying Shoreline Management Program were approved by the Washington State Department of Ecology and became effective October 14, 2019.The Snohomish County Planning and Development Services (PDS) Department updated the footprint of this spatial dataset in October 2022. The footprint was updated based on a recent version (3/16/2022) of the FEMA DFIRM flood hazard map for Snohomish County. No updates were made to shoreline designations, other than to expand, shrink, or maintain the 2019 mapped designations based on updated flood hazard area polygons.

  14. a

    Active Permits

    • snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com
    Updated Jun 3, 2021
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    Snohomish County (2021). Active Permits [Dataset]. https://snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com/datasets/active-permits-1
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    Dataset updated
    Jun 3, 2021
    Dataset authored and provided by
    Snohomish County
    Area covered
    Description

    Active project and permitting records from the PDS permitting database are joined to cadastral parcels. Of the plethora of all possible permit types, these data are generalized in the following groupings: Construction vs. Decision, Commercial vs. Residential, and Land Disturbing Activity (LDA). Examples may include, though not limited to, per se Construction permits indicate building permits for structures. Decisions may indicate Land Use permitted for Plats and Rezones. LDA permits are required for new or replaced impervious areas greater than 2,000 square feet (s.f.), clearing/grading greater than 7,000 s.f., more than 100 cubic yards in volume, activity in critical areas, and other criteria. Status is classified as "In Review" and/or "Under Construction", depending on the query of all the permits relating to the parcel_id number. This geo-dataset is dedicated to the map viewer of the same name (https://www.snohomishcountywa.gov/3820/PDS-Active-Projects-and-Permits).

  15. K

    King County, Washington Lakes and Large Rivers

    • koordinates.com
    csv, dwg, geodatabase +6
    Updated Sep 19, 2018
    + more versions
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    King County, Washington (2018). King County, Washington Lakes and Large Rivers [Dataset]. https://koordinates.com/layer/97400-king-county-washington-lakes-and-large-rivers/
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    geodatabase, dwg, mapinfo mif, shapefile, geopackage / sqlite, pdf, kml, mapinfo tab, csvAvailable download formats
    Dataset updated
    Sep 19, 2018
    Dataset authored and provided by
    King County, Washington
    Area covered
    Description

    Open water features, both natural and anthropic, for King County and portions of adjacent counties. Features can be displayed as water or non water to distinguished between water and land. FEAT_TYPE item defines multiple classes of features, primarily lakes/ponds and streams rivers. Puget Sound and significant double-banked streams and rivers are shown, plus a limited number of manmade features such as aqueducts, ditches, channels and flumes. Areal open water features are mainly differentiated as either Lakes/Ponds or Impoundments roughly defined as natural and anthropic, respectively. This layer includes wetlands only to the extent that the open water portion of emergent wetlands is mapped. A value in the STATUS item indicates whether the water feature is associated with a wetland, dependent on best available ancillary data and orthoimagery. The name of features, where available, is included. By using the SUBSET item the layer can be defined to show only the larger water bodies and rivers.

    © Pierce County GIS vector data, Snohomish County GIS vector data, King County Water and Land Resources and Washington State Department of Ecology vector data

  16. a

    Voter Precinct Districts

    • snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com
    Updated Dec 7, 2022
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    Snohomish County (2022). Voter Precinct Districts [Dataset]. https://snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com/maps/snoco-gis::voter-precinct-districts
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    Dataset updated
    Dec 7, 2022
    Dataset authored and provided by
    Snohomish County
    Area covered
    Description

    The Voter Precincts featureclass represents the areas that make up the Voting Precincts used in elections in Snohomish County. It is one of several districts which hold elections that is maintained by the Snohomish County Auditor's Office, Elections and Information Technology, GIS.All Auditor Elections maintained district data sets contain districts that hold elections administered by the Auditor's Office. These districts are based on Voter Precincts which are comprised of Voter Precinct Portions. Updates to district boundaries and information occur in the Voter Precinct Portion featureclass. The updated Voter Precinct Portion featureclass is joined with tabular data from the State VoteWA system to create updated Voter Precincts and district featureclasses. Geographic Extent: Snohomish CountyUpdate Frequency: As neededLast Updated: 05/2025Contact: GIS@snoco.org

  17. a

    Agricultural Land

    • snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com
    Updated Nov 10, 2016
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    Snohomish County (2016). Agricultural Land [Dataset]. https://snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com/datasets/agricultural-land
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    Dataset updated
    Nov 10, 2016
    Dataset authored and provided by
    Snohomish County
    Area covered
    Description
    • In full disclosure, these AG-resource features are also found on the Official Zoning Maps labeled as "AG-_", and online via the PDS web map applications and their reports.----------------------------------------------Agricultural Lands----------------------------------------------Snohomish County Code (SCC): 30.32B.010Purpose and applicability.(1) The purpose of this chapter is to regulate development on and adjacent to designated farmlands in order to conserve farmland resources and ensure compatibility between farmlands and adjacent uses. This chapter is intended to assure that the use of lands adjacent to designated farmland does not interfere with the continued use, in the accustomed manner, of the designated farmland for the production of food and agricultural products. The chapter establishes that farm activities conducted on designated farmland are recognized as accepted activities. A further purpose is to encourage a good neighbor relationship between farmland owners and residential and other landowners. The chapter promotes greater awareness of farming activities through notification regarding farm activities to owners of land in, adjacent to, and near designated farmlands.(2) The provisions of this chapter shall apply to:(a) Lands designated as farmland;(b) Lands adjacent to or within 1,300 feet of lands designated farmland; and(c) Agricultural activities as defined in chapter 30.91A SCC. (Added by Amended Ord. 02-064, Dec. 9, 2002, Eff date Feb. 1, 2003).----------------------------------------------Agricultural Lands Disclosure Buffer----------------------------------------------Snohomish County Code (SCC): 30.32B.220Disclosure text.The following shall constitute the disclosure required by this part:Your real property is on, adjacent to, or within 1,300 feet of designated farmland; therefore, you may be subject to inconveniences or discomforts arising from agricultural activities, including but not limited to, noise, odors, fumes, dust, smoke, the operation of machinery of any kind (including aircraft), the storage and disposal of manure, the application by spraying or otherwise of chemical or organic fertilizers, soil amendments, herbicides and pesticides, hours of operation, and other agricultural activities.Snohomish County has adopted a Agricultural Lands Regulations (chapter 30.32B SCC) which may affect you and your land. You may obtain a copy of chapter 30.32B SCC from Snohomish County.A provision of chapter 30.32B SCC provides that "agricultural activities conducted on designated farmland in compliance with acceptable agriculture practices are presumed to be reasonable and shall not be found to constitute a nuisance unless the activities have a substantial adverse effect on the public health or safety."This disclosure applies to the real property upon any development or building permit approval; or, in the case of real property transfers, the disclosure applies to the subject property as of the date of the transfer. This disclosure may not be applicable thereafter if areas designated as farmland are changed from the farmland designation.Nothing in chapter 30.32B SCC shall affect or impair any right to sue for damages. (Added by Amended Ord. 02-064, Dec. 9, 2002, Eff date Feb. 1, 2003; Amended by Amended Ord. 05-089, Dec. 21, 2005, Eff date Feb. 1, 2006).
  18. a

    Snohomish County Master Records

    • snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com
    Updated Aug 8, 2023
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    Snohomish County (2023). Snohomish County Master Records [Dataset]. https://snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com/datasets/snohomish-county-master-records
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    Dataset updated
    Aug 8, 2023
    Dataset authored and provided by
    Snohomish County
    Area covered
    Snohomish County
    Description

    The Master Record file contains detailed information about each property’s assessment characteristics, including Property Identification Number (PIN), jurisdiction, neighborhood, Situs address, legal description, valuation, and tax information.

  19. a

    Tax Code Areas

    • snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com
    Updated Jun 18, 2025
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    Snohomish County (2025). Tax Code Areas [Dataset]. https://snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com/datasets/tax-code-areas/explore
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    Dataset updated
    Jun 18, 2025
    Dataset authored and provided by
    Snohomish County
    Area covered
    Description

    This data set is a compilation of tax code area boundaries in Snohomish County, Washington. Tax code areas are formed from a composite of special purpose district boundaries such as cities, fire districts, school districts, etc. Tax code areas represent areas with a uniform tax (levy) rate for that area. The boundaries of the present data set are compiled from data sets for many of the taxing districts that were compiled from legal descriptions for each annexation from the original incorporation onward. Legal descriptions were interpreted without assumption of intent or bias from any pre-existing maps. Spatial registration conforms to features in the Snohomish County parcel data set. For areas where special purpose district boundaries have not been converted, the boundaries were taken from a manually maintained atlas.

  20. a

    City Boundaries

    • snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com
    Updated Aug 9, 2024
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    Snohomish County (2024). City Boundaries [Dataset]. https://snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com/datasets/city-boundaries-1/about
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    Dataset updated
    Aug 9, 2024
    Dataset authored and provided by
    Snohomish County
    Area covered
    Description

    This dataset is a compilation of municipal boundaries for incorporated cities in Snohomish County, Washington. The boundaries were compiled from muni_annex dataset that tracks all municipal annexations, dissolving the active annexations together to create the current city boundaries. Spatial registration conforms to features in the Snohomish County parcel data set.

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Snohomish County (2025). PLSS Line [Dataset]. https://snohomish-county-open-data-portal-snoco-gis.hub.arcgis.com/datasets/plss-line

PLSS Line

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16 scholarly articles cite this dataset (View in Google Scholar)
Dataset updated
Jun 26, 2025
Dataset authored and provided by
Snohomish County
Area covered
Description

The Public Land Survey System (PLSS) Grid - Line is linework derived from the master coverage of the PLSS maintained by the Assessor's Office. This dataset only contains linework and attribute information for townships, ranges, sections, quarter sections and quarter quarter sections and government lot lines. It is compiled from recorded surveys and plats, coordinates and linework supplied by private surveyors, Snohomish County Public Works Survey, cities, Washington State Department Of Natural Resources (DNR) and the United States Department of the Interior - Bureau of Land Management (BLM). Standard BLM methods are used to construct the aliquot grid. In coastal areas, the aliquot grid may not apply for many of the coastal sections, it has been constructed for the purposes of land title and defining map extents for automated routines.

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