Series: T626   Rolls: 1 - 2668 1930 Facts 1. Fifteenth U.S. decennial population census. 2. U.S. population: 127.0 million 3. Census conducted by the Director of the Census     (Census Bureau, U.S. Department of Commerce and     Labor). 4. Census day: 1 April 1930. 5. Mandated copies: One set, to the Director of the Census.     Local jurisdictions could buy a copy of their schedules at     cost.