Census column key

Meaning of columns in United States Federal Census's by year.

1800

 * 1)  Number of males under 10 years of age.
 * 2)  Number of males between 10 to 16 years of age.
 * 3) Number of males between 16 to 26 years of age.
 * 4) Number of maeles between 26 to 45 years of age.
 * 5) Number of males over 45 years of age.
 * 6)  Number of females under 10 years of age.
 * 7) Number of females between 10 to 16 years of age.
 * 8)  Number of females between 16 to 25 years of age.
 * 9) Number of females between 26 to 45 years of age.
 * 10) Number of females over 45 years of age.
 * 11)  Number of other free persons in that family, except Indians not taxed.
 * 12) Number of slaves in the household.

1840
columns 4-16) Free White Persons, including Heads of Families - Males 17 - 29 Free White Persons, including Heads of Families - Females
 * 1 Line Number
 * 2 Nameof the county, city, ward, town, township, parish, precinct, hundred, or district
 * 3 Names of Head of Families
 * 4 Under 5
 * 5 5 and under 10
 * 6 10 and under 15
 * 7 15 and under 20
 * 8 20 and under 30
 * 9 30 and under 40
 * 10 40 and under 50
 * 11 50 and under 60
 * 12 60 and under 70
 * 13 70 and under 80
 * 14 80 and under 90
 * 15 90 and under 100
 * 16 100 and upwards
 * 17 Under 5
 * 18 5 and under 10
 * 19 10 and under 15
 * 20 15 and under 20
 * 21 20 and under 30
 * 22 30 and under 40
 * 23 40 and under 50
 * 24 50 and under 60
 * 25 60 and under 70
 * 26 70 and under 80
 * 27 80 and under 90
 * 28 90 and under 100
 * 29 100 and upwards
 * 30 - 35 Free Colored Persons - Males
 * 30 Under 10
 * 31 10 and under 24
 * 32 24 and under 35
 * 33 35 and under 55
 * 34 55 and under 100
 * 35 100 and upwards
 * 36 - 41 Free Colored Persons - Females
 * 36 Under 10
 * 37 10 and under 24
 * 38 24 and under 35
 * 39 35 and under 55
 * 40 55 and under 100
 * 41 100 and upwards
 * 42 Line Number
 * 43 - 48 Slaves - Males
 * 43 Under 10
 * 44 10 and under 24
 * 45 24 and under 35
 * 46 35 and under 55
 * 47 55 and under 100
 * 48 100 and upwards
 * 49 - 54 Slaves - Females
 * 49 Under 10
 * 50 10 and under 24
 * 51 24 and under 35
 * 52 35 and under 55
 * 53 55 and under 100
 * 54 100 and upwards
 * 55 TOTAL
 * 56 - 62 Number of each family employed in
 * 56 Mining
 * 57 Agriculture
 * 58 Commerce
 * 59 Manufacture and trade
 * 60 Navigation of the ocean
 * 61 Navigation of canals, lakes, rivers
 * 62 Learned professional engineers
 * 63 - 64 Pensioners for Revolutionary or military services, included in the foregoing
 * 63 Names
 * 64 Ages
 * 65 - 70 Deaf and Dumb, Blind, and Insane White Persons, Included in the foregoing
 * 65 - 67 Deaf and Dumb
 * 65 Under 14
 * 66 14 and under 25
 * 67 25 and upwards
 * 68 - 70 Blind and Insane
 * 68 Blind
 * 69 Insane and Idiots at public charge
 * 70 Insane and Idiots at private charge
 * 71 - 74 Deaf and Dumb, Blind, and Insane Colored Persons, Included in the foregoing
 * 71 - 72 Deaf, Dumb and Blind
 * 71 Deaf and Dumb
 * 72 Blind
 * 73 - 74 Insane and Idiots
 * 73 Insane and Idiots at public charge
 * 74 Insane and Idiots at private charge
 * 75 - 81 Schools & c.
 * 75 Universities or college
 * 76 Number of students
 * 77 Academies and Grammar Schools
 * 78 No. of Scholars
 * 79 Primary and Common Schools
 * 80 No. of scholars at public charge
 * 81 No. of white persons over 20 years of age in each family who cannot read and write

1850

 * 1 Dwelling - houses numbered in the order of visitation
 * 2 Families numbered in the order of visitation
 * 3 The name of every Person whose usual place of abode on the first day of June, 1850, was in this family
 * 4 Age
 * 5 Sex
 * 6 Color < White, black or malato
 * 7 Profession, Occupation, or Trade of each Male Person over 15 years of age
 * 8 Value of Real Estate owned
 * 9 Place of Birth Naming the State, Territory or Country
 * 10 Married whithin the year
 * 11 Attended School within the year
 * 12 Persons over 20 y'rs of age who cannot read & write
 * 13 Whether deaf and dumb, blind, insane, idiotic, pauper, or convict