Jones Country Meats
204 N. Seminary Avenue
(815) 337-0300
Hours: M-F 8AM-5PM Sat 8AM-3PM
They also have a website:
http://www.jonescountrymeats.com/
I have only bought retail products from there. They have had Buffalo, Caribou, Bear, Venison, Elk, Pheasant, Rabbit, etc. They do offer deer processing. Hope it works out for you.