Snohomish County AssessorData Dictionary PageIndex_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.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/55e5e2b357b147439baa6d3a19767f8b_0engSnohomish County Open Data PortalPublicParcel Map Page Index [Washington (State)--Snohomish County]Web servicesWashington (State)--Snohomish CountyWashington (State)Last Modified: 2025-12-17