Snohomish County AssessorThis data set is a compilation of pre-proposed and proposed annexation boundaries for cities and districts in Snohomish County, Washington. The boundaries are compiled from legal descriptions for each pre-proposed or proposed annexation. 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. Information captured include the boundary of each individual pre-proposed or proposed annexation, the entity intending to annex, the name of the intended annexation, Y or N indicating if the annexation is proposed, the BRB number of proposed annexations, and the date the intended annexation was submitted to the Assessor's office.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/57fbcc0c598d4cc7b8e38e0b0146033b_0engSnohomish County Open Data PortalPublicPre and Prop Annex [Washington (State)--Snohomish County]Web servicesWashington (State)--Snohomish CountyWashington (State)Last Modified: 2025-10-16