Claim: 1860 United States census was the eighth census conducted in the United States which yielded to a total population of 31,443,322 people across 33 states.
Evidence: The United States Census of 1860 was the eighth Census conducted in the United States starting June 1, 1860, and lasting five months. It determined the population of the United States to be 31,443,322, in 33 states and 10 organized territories.