City of Countryside issued the following announcement on July 1.
Starting on August 11, the U.S. Census Bureau will begin their efforts to follow-up with households that have not responded to the Census. These efforts will include in-person and door-to-door interviews.
If you have not yet responded to the Census, there is still time. Households can respond online at my2020census.gov, by phone at (844) 330-2020 or by mailing directly back to the U.S. Census Bureau.
Original source can be found here.