In a posting on his blog, Census Bureau Director Robert Groves says that census-takers are nearly done with knocking on doors of households from which 2010 Census forms were not received. As of June 28, 99.6% of the interviews were completed.

The bureau is conducting quality-assurance audits to make sure the interviews were conducted correctly (see this report about 10,000 households in Brooklyn whose information will be redone because two managers allegedly used online databases to fill in census forms rather than contacting the householders directly). Additional quality-assurance operations will examine the status of addresses deemed to be vacant on April 1, Census Day; addresses that could not be found and were recommended for deletion from the address list; and addresses added too late to be visited by census-takers during the non-response follow-up phase.