1940 Census - Released on April 2, 2012, the 1940 U.S. census is the most recent federal U.S. census available to the public.
1930 Census - If If you've ever wondered who your ancestors voted for, what their primary mode of transportation was, and how they received the news of their day — the 1930 census may give you a clue.
1920 Census - The only census to request the year in which a person was naturalized.
1910 Census - The quality of the microfilming of the 1910 census is especially poor when compared to other census schedules.
1900 Census - This is the only census to report the month and year of birth for each person, as well as the first census to report the year of immigration.
1890 Census - Most of this census was destroyed by fire, with only 1% of census schedules surviving.
1880 Census - The first census to identify the relationship of each person to the head of household.
1870 Census - A very important census if you're researching black ancestors, since prior to 1870 slaves were not reported by name, only by age and sex.
1860 Census - Separate slave schedules include the name of each slave owner, the number of slaves owned, and the number of slaves manumitted (freed).
1850 Census - The first US federal census to list each household member by name.