Cook_County_GISCreated for all users to view and understand jurisdictional boundaries within Cook County. GIS department maintains Municipality feature. State of Illinois maintains Board of Review, Congressional District, Judicial District, State Representative and State Senate. Service published in 2019. Data is updated as providedArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/bbd5a8e81ea64fafb496b106c5723ceb_5engCook CentralPublicJudicial District [Illinois--Cook County]Web servicesIllinois--Cook CountyIllinoisLast Modified: 2022-09-13