The park itself is long gone and I don't think any structures survive.
However, there are some street names in the area it once stood. The most noticable is Electric Park drive, just to the west of DeKalb Avenue (the DeKalb-Sycamore Road) Illinois Highway 23 just south of Sycamore.
Other streets in the area which used to be Electric Park are Fairland Drive, Pine Street, Oak Lane, Eastgate Drive, Highland Drive.
The area is north of Portillo's and across from McDonald's, Tom & Jerry's restaurant and Menard's.