But with this also came a deep fear that this population over which they exercised such stern rule might one day rise in rebellion. The 1860 census found that the state had 111,000 more enslaved people than it did whites; it was, moreover, one of only two states where this kind of imbalance existed, the other being Mississippi. Free and enslaved Blacks together accounted for over 40 percent of the population of South Carolina’s chief city, Charleston, and this caused uneasiness among its white citizens.