Polk County Department of Human Services Carpenter Food Stamp Office is situated at 1900 Carpenter Avenue Des Moines, Iowa, 50314. This office administers the federal Supplemental Nutrition Assistance Program (SNAP) for Des Moines residents. Often called “food stamps,” SNAP benefits provide nutrition assistance for income-eligible households. The U.S. Department of Agriculture (USDA) oversees the SNAP program, and SNAP Offices distribute benefits to Des Moines residents. The program reduces food insecurity and poverty by providing supplemental nutrition assistance for low-income households.