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, 2018

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 2018)

Address Points (updated weekly)

Parcels (SoA, September 2018)

Streets (updated weekly)

Building Footprints (July 2016)

Railroads (October 2018)

Townships

Forest Preserves (FPDWC)

Trails (FPDWC)

Zoning (Unincorporated) (October 2018)

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 (December 2018)

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