The Supplemental Nutrition Assistance Program (SNAP) helps low-income individuals purchase food so that they can obtain a nutritious diet. One important measure of program performance is the ability to reach its target population, as indicated by the percentage of people eligible for benefits who actually participate. This report is the latest in a series on SNAP participation rates. Estimates are based on the March 2010 Current Population Survey and program administrative data for Fiscal Year (FY) 2009. The findings represent national participation rates for FY 2009.