The 1890 census was taken under the supervision of Robert P. Porter, according to an act of March 1, 1889, and modeled after that used for the 1880 census. The enumeration began on June 2, 1890, because June 1 was a Sunday. The census employed 175 supervisors, with one or more appointed to each state or territory, exclusive of Alaska and Indian territory. Each subdivision assigned to an enumerator was not to exceed 4,000 inhabitants. Enumeration was to be completed within 2 weeks in cities with populations under 10,000 (according to the 1880 census results). Enumerators were required to collect all the information required by the act by a personal visit to each dwelling and family.
At its conclusion, the 1890 census reported the U.S. population had grown to 62,979,766, a 25.5 percent increase from 1880.