The Civil Rights Act (1866) was passed by Congress on 9th April 1866 over the veto of President Andrew Johnson.
Square Miles of United States. The square miles of United States is 3,794,101 sq mi. This is equivalent to 9,826,675 km2. In terms of size comparison, it is slightly larger than the Peopleâs Republic of China. The 2010 estimated population is 310,931,000.
According to the U.S. Census Bureau, the county has a total area of 589 square miles (1,530 km 2), of which 586 square miles (1,520 km 2) is land and 3.1 square miles (8.0 km 2) (0.5%) is water.