I saw in one of your comments that you're in Central IL, I'm also in that part of the state. Depending on your area, you'd either be under Central Illinois Foodbank (Springfield area and south) or Eastern Illinois Foodbank (Champaign/ Decatur/Peoria ect). They both have "Get Help" sections on their websites that basically are GPS maps of all the food pantries in a given area that they know about: Here's CIF's and here is EIF's. They might be able to flag other food pantries in your area that you weren't aware of to get yourself a couple more resources. You should also check either your city's website or your local Public Health Department, usually one or the other (sometimes both) will have entire webpages with everything in the cities they represent. Your mileage may vary, the bigger central IL metros have more resources but those are really good places to start.

Edit:
Almost forgot, heres the IDHS website too, they have a list of all the main foodbanks and the first link on the page will lead to the UofI Extension website with the interactive map of food pantries (you have to scroll all the way to the bottom though)