Kane county's population is more inner suburbs than outer suburban. The Fox valley is a collection of old industrial towns that grew, but were overtaken by the suburbs of Chicago in the 1980's and 90's. This includes 2 of the 4 old satellite cities: Aurora and Elgin along with Waukegan and Joliet. That population is not exurban.
This is quite an exaggeration, muon. Elgin's population has more than doubled since 1960. Aurora's has more than tripled. They used to be industrial towns, and still have some of that feel in spots (albeit nothing like, say, Cicero), but the recent population growth is almost entirely purely suburban/exurban subdivision stuff.
And the rest of Kane County (the Tri-cities, etc.) can hardly be described as industrial.
