Before revision: Description IPUMS draws on every surviving United States census from 1850 to 2000 (the 1890 census is missing because it was destroyed in a fire) and from the American Community Survey since 2000 and the Current Population Survey since 1962.
After revision: Description IPUMS draws on every surviving United States census from 1850 to 2010 (the 1890 census is missing because it was destroyed in a fire) and from the American Community Survey since 2000 and the Current Population Survey since 1962.