The 1830 census records are useful in identifying the locality to be searched for other types of records for a named individual. Free men of color are listed as heads of household by name.
Slaves appear in age groupings by name of owner.
By combining those age groupings with probate inventories and tax list data, it is sometimes possible to determine names of other family members and the birth order of those individuals. The 1830 census went a step further in breaking down ages, thus allowing more precise knowledge of the household configuration. With the age categories expanded to include those one hundred years and older, it is possible to have a better idea of life spans during that time period. The addition of information regarding those who were deaf, dumb, and blind is an indication that there may be related guardianship or institutional records. The presence of aliens in a household suggests the possibility that those individuals may eventually have been naturalized in a nearby court.