In March 2020, the Census Bureau began mailing letters instructing Chester County residents on how to fill out the 2020 Census. However, the Census Bureau can only send these letters to physical addresses where people actually live, not to P.O. Boxes.
If you use a P.O. Box to receive your residential mail, you will NOT receive an instruction letter from the Census Bureau. But, you can still fill out the 2020 Census from now until October 31, 2020 by filling out a form online at 2020cenus.gov. Or you can fill out the census over the phone by calling 844-330-2020.