Available Data

Aerial Imagery

Will County has aerial imagery for the following years.(link)
1961, 1997, 2004, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2017

Topographic data

Will County has topographic data (contour, elevation, & LiDAR) for the following years.(link)
2014, 2007

Vector Data

Base Map Layers

County Limits

Municipalities (County Clerk, April 2017)

Address Points (updated weekly)

Parcels (SoA, July 2017)

Streets (updated weekly)

Building Footprints (July 2016)

Railroads (July 2016)

Townships

Forest Preserves (FPDWC)

Trails (FPDWC)

Zoning (Unincorporated) (August 2017)

PLSS Section Boundary

PLSS Quarter Section Boundary

*The Public Land Survey System (PLSS) is used as a frame of reference to describe property boundaries in Illinois.

Hydrology

Flood Zones

Hydrolines

Hydropolys (July 2016)

Watersheds

Political Boundaries

Congressional

State Senate

State House of Representatives

Judicial

County Board

School Districts   (County Clerk, July 2016)

Community College Districts

Elementary School Districts

High School Districts

Unit School Districts

Taxing Districts   (County Clerk, July 2016)

Library Districts

Park Districts

Fire Districts