Because the 1890 US Census was burned in 1921 (see discussion) (see Census site herefor 1890)
U.S. President: Benjamin Harrison
Population: 62,979,766
Census date: 1 June 1890
Time to complete: one month
US States: 44
U.S. President: Benjamin Harrison
Population: 62,979,766
Census date: 1 June 1890
Time to complete: one month
US States: 44