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.
It should not be confused with miles square, which refers to the number of miles on each side squared. For instance, 20 miles square (20 Ã 20 miles) is equal to 400 square miles; an area of 10 Ã 40 miles is likewise 400 square miles, but it is not 20 miles square. One square mile is equal to: 1  4,014,489,600 square inches.