...

Contact Info: http://dnr.state.il.us/lands/landmgt/programs/dayuse/geocaching.htm

Boone County Conservation District

Geocaching is allowed on BCCD properties, except for Flora NP and Kinnikinnick NP.

More Info: http://www.boonecountyconservationdistrict.org/pages/geocache.html

DuPage County Forest Preserves

...

Contact Info: http://www.mccdistrict.org/web/re-geocache.htm

Rockford Park District

Geocaching is allowed, except for certain specified properties.

More Info: http://www.rockfordparkdistrict.org/geocaching.cmsx

Will County Forest Preserves

...