Lake County Illinois GISDownload In State Plane Projection Here . These boundaries represent either a Fire Protection Taxing District or a municipal fire department and are based on legal documents filed in the office of the Recorder of Deeds and on court orders. Mapping is based on the legal descriptions from those documents, which relate to existing parcel, municipal, township and PLSS features. Attributes include the fire service provider name and address. Update Frequency: This dataset is updated on a weekly basis.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/567829d146ce4886a0c8a5e3f569be95_3engLake County Illinois Open Data PortalPublicFire Protection District and Municipal Fire Departments [Illinois--Lake County]Web servicesIllinois--Lake CountyIllinoisLast Modified: 2026-01-04