Thurston GeoData CenterThurston County, WA, US Post Office Box assigned zip codes. The purpose of this data is as a general reference only and actual mailing zip codes should be obtained from the US Postal Service . This layer was originally created using US Post Office Data. These points are associated with the US Post Office Box locations that house a unique Zip Code. This layer should be used in conjunction with the Zip Codes layer which is used to show zip code area boundaries associated with addressing and Thurston County Assessor's Parcels. For example i n smaller jurisdictions, like Bucoda, that rely on a post office box rather than rural delivery, the zip code point will reflect the unique zip code while the surrounding area will reflect the greater rural zip code boundaries and not the localized PO Box zip code.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/23b8faf476b148239fb7fd4387e5fee4_0engThurston GeoData CenterPublicThurston Zip Code Points [Washington (State)--Thurston County]Web servicesWashington (State)--Thurston CountyWashington (State)Last Modified: 2025-05-05