The state and county of residence was given on each page.
 name of the head of the household
 number of free white males 16 or older
 number of free white males under 16
 number of free white females
 number of all other free persons
 number of slaves
 sometimes the town or district
States recorded: Connecticut [CT], Maine [ME, part of Mass.], Maryland [MD], Massachusetts [MA], New Hampshire [NH], New York [NY], North Carolina [NC], South Carolina [SC], Pennsylvania [PA], Rhode Island [RI], Vermont [VT, formed in 1791]
Totally lost or partially missing: Georgia [GA], Delaware [DE], New Jersey [NJ], Kentucky Territory [KY], NC, VA.
Some of the schedules were recreated from tax lists and other local records. [i.e. VA, some counties in NC & MD,]
Enumerators missed folks now and then, so not everyone was counted. Sons and daughters could have been apprenticed out, so were part of other households.
Make a list of household members and their ages to use as a guide. Allow for elderly relatives, in-laws, other relatives, servants, hired help and lodgers.