This study employs input–output (I/O) modeling at the state and county level to compare national estimates of the federal Supplemental Nutrition Assistance Program (SNAP). The results show that more localized economies cannot achieve the results predicted by national models likely because of leakage of economic activity outside the boundaries of a single state or county. This study sheds light on methodological tools that forecasters and policy makers can use in making decisions based on economic impact of social safety net programs.