 Between 2016 and 2017 the population of Calhoun County, SC declined from 14,886 to 14,808, a -0.524% decrease and its median household income grew from $42,779 to $44,010, a 2.88% increase.The population of Calhoun County, SC is 53.6% White Alone, 41.6% Black or African American Alone, and 3.58% Hispanic or Latino.N/A% of the people in Calhoun County, SC speak a non-English language, and 98.3% are U.S. citizens.