Cook_County_GISCreated for all users to view and understand jurisdictional boundaries within Cook County. GIS department maintains Municipality feature. Clerk Tax Services maintains Political Township feature. Clerk Elections maintains Commissioner District feature. Service published in 2019. Data is updated as needed.ArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/78fe09c5954e41e19b65a4194eed38c7_3engCook CentralPublicPolitical Township [Illinois--Cook County]Web servicesIllinois--Cook CountyIllinoisLast Modified: 2022-08-09