Public Law 94-171 require the U.S. Census Bureau to work with states in a non-partisan manner to identify geographic areas for which population tabulations are needed for legislative redistricting, and to deliver those tabulations to the states no later than one year from Census Day (April 1, 2021). This presentation will explore how the Census Bureau meets the requirements of P.L. 94-171 through the Redistricting Data Program. The Census Bureau’s design plans for the 2020 Census Prototype Redistricting Data File design will be discussed with some explanation on how the states use these data for their legislative redistricting.