Crystal Duffy, a member of Our Postville Community Heart and Soul, said more than a fifth of Postville’s population worked at the plant. Duffy said the Postville Community Food Pantry is leading efforts connecting residents in need of food. Box 1129, Postville, IA 52162. It will be located at the Big Four Fairgrounds, 327 N Maple St., Postville, IA 52162. Checks made out to the 2026 Postville Fire Community Support Fund can be mailed to Community Foundation of Greater Dubuque at 700 Locust St., Suite 195, Dubuque, IA 52001.