Parcels (dated)
Parcel boundaries for Lake and McHenry Counties in Illinois (2015 and 2017) and Walworth and Kenosha Counties in Wisconsin (2010). Though many parcel lines will still be current, the most up to date parcel data can be viewed at the following websites at the time of this project's development.
Lake County
McHenry County
Kenosha County
Walworth County