Background

GIS Data for Snohomish County

On the Snohomish County GIS Open Data website, visitors can access a comprehensive collection of Assessor's Office spatial and tabular data freely available for download via the Snohomish County Open Data Portal. The site features a variety of frequently updated spatial data layers including "All Parcels (Past and Present)," "Cadastral Annotation," "City Boundaries," "Current Parcels," "Easements," "Municipal Annexation History," "Parcel Centroids," "Public Land Survey Grid," "Recent Property Sales," "Right of Way," "Subdivision Boundaries," "Subdivision Lots," and "Tax Code Areas," with most datasets updated three times per week or as needed. Additionally, users can download key tabular datasets such as the "Assessment roll" in CSV and Microsoft Excel formats, "Parcel Legal Descriptions," and the "Plat Listing by Name" with document hyperlinks, all updated regularly. The site also provides access to a zip file of "Unrecorded Plat PDFs," offering scanned plat documents. While the Assessor's Office strives to keep this data freely and readily accessible, technical assistance for downloads is limited due to system variability. This platform serves as a valuable resource for detailed land records, property boundaries, and related GIS data, with ongoing enhancements planned to expand data offerings.