The primary purpose of this assessment is to document and analyze what happened during the 2010 Census Non-ID Processing operation. The Non-ID Processing assessment will provide information on the background of the operation, including the planning, development, and implementation stages. The assessment will also document the final results for all aspects of the operation and provide information on the impacts to the 2010 Census address files. Overall, the assessment will produce valuable data for the next planning cycle for the 2020 Census.