1850 United States Census

The United States Census of 1850 was the seventh. Conducted by the on, , it determined the resident population of the  to be 23,191,876 &mdash; an increase of 35.9 percent over the 17,069,453 persons  during the.

This was the first census where there was an attempt to collect information about every member of every household, including women, children, and slaves. Prior to 1850, census records had only recorded the name of the head of the household and broad statistical accounting of other household members (three children under age five, one woman between the age of 35 and 40, etc.).

made extensive use of the 1850 census results in his politically notorious book .