Freestyle, B&H or Adorama. In Central IL, packages shipped FedEx Ground or UPS Ground from the east coast are delivered to my door in 2 business days.
If you're needing Kodak B&W, check out Camera Corner in Bloomington. You might be able to get film from Better Imaging/Netprintz in Urbana/Champaign. I think they're on University, across from the Amtrak station.