Mortality Index: the United States, 1850-1880 Mortality schedules counted the number of deaths that occurred in the year before the census was taken. They exist for the 1850 through 1880 censuses. This means that there are only four schedules currently available for the U.S. census. Share:Click to share on Facebook (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Twitter (Opens in new window)Click to email this to a friend (Opens in new window)MoreClick to share on Telegram (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pocket (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Skype (Opens in new window)