Nobody else is going to do the legwork for you. You want to know this, you need to do the work for it.
Google is your friend.
You will need to go by the county / city the store is in, not its neighborhood or street, and include other taxes levied in those areas.
Illinois sales tax is 6.25%, then you add the county tax and any other local taxes to that.
The following website can help you out:
https://www.avalara.com/taxrates/en/state-rates/illinois.html
Scroll down to the Cities and Counties section to find specific taxes and rates for each area the stores are in.
Its up to you if you want to do it or not. Nobody here is going to just do all the work for you just because you don't want to.