Cardin, Oklahoma, officially closed its last business, the post office, on February 28, 2009. In April 2009, federal officials stated that only seven residences were occupied in Cardin, and that the town's water service would soon be shut off. This made Cardin the first city within the area to be completely closed down.[6] In November 2010, the last family in Cardin received its final buyout payment from the federally funded Lead-Impacted Communities Relocation Assistance Trust and departed, reducing the town's population to zero.[4]