Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Richland County is a county located in the U.S. state of South Carolina. The 2000 U.S. census recorded its population to be 320,677. In 2007, the U.S. Census Bureau estimated that its population had reached 364,001. It is the second most populous county in South Carolina, behind only Greenville County. The county seat is Columbia, the state capital. It is also the center... Mehr