Cook_County_GISCreated for all users to view and understand jurisdictional boundaries within Cook County. GIS department maintains Municipality feature. Municipal boundary is aligned to the far side of the right of way in accordance with Illinois state statute. Data is updated periodically throughout the year.ArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/534226c6b1034985aca1e14a2eb234af_2engCook CentralPublicMunicipality [Illinois--Cook County]Web servicesIllinois--Cook CountyIllinoisLast Modified: 2022-08-05