MISSOURI STATE CENSUSES
The territory of Missouri took censuses in 1814, 1817 and 1819. The state of Missouri took censuses in 1821, 1824, every four years through 1868 and in 1876, the last year. Unfortunately, most of these Territorial and State Censuses no longer exist. The Missouri State Historical Society and the Missouri State Archives have some copies.
State Historical Society of Missouri Census Information
ESTABLISHING THE FACT OF BIRTH AND DEATH--
State Historical Society of Missouri Birth and Death Information
OBTAINING MARRIAGE AND DIVORCE RECORDS--
State Historical Society of Missouri Marriage and Divorce Information