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Format by C. W. Barnum
FEDERAL POPULATION CENSUS CONTENT, 1820-1840
CONTENT 1820 1830 1840
Names of heads of families only. X X X
Number of free white males and females (separately) in family in age groups:  under 10, 10-15, 16-25,  26-44, 45 and over. X    
Number of free white males and females (separately) in family in 5-year age groups under 20 years of age.   X X
Number of free white males and females (separately) in family, in 10-year age groups, ages 20-99.   X  X
Number of free white males and females (separately) in family, 100 years of age and over.    X  X
Number of free white males in family, ages 16-18. X    
Number of all other free persons (including colored) in age groups:  under 14, 14-25, 26-44, 45 and over by sex. X    
Number of all other free persons (including colored) in age groups:  under 10, 10-23, 24-35, 36-54, 55-99, 100 and over by sex.   X  X
Number of slaves in age groups:  under 14, 14-25, 26-44, 45 and over by sex.  X    
Number of slaves in age groups:  under 10, 10-23, 24-35, 36-54, 55-99, 100 and over by sex.   X X
Number of foreigners not naturalized. X X  
Number of deaf and dumb (white and colored enumerated separately); slaves and free colored grouped together in 1830.   X  X
Number of blind (white and colored enumerated separately).    X  X
Number of insane or idiotic (white and colored enumerated separately; those in public charge and those in private charge listed separately).     X
Civil division of place of residence (town or militia district). X X X
Number of persons engaged in agriculture. X   X
Number of persons engaged in commerce. X   X
Number of persons engaged in manufacture; and the trades, 1840. X   X
Number of persons employed in mining.     X
Number of persons employed in navigation of canals, lakes, and rivers.      X
Number of persons employed in navigation of the ocean.     X
Number of persons employed in the learned professions and engineers.     X
Names and ages of pensioners of Revolutionary or military service.     X
Number of white males over 21 years of age who cannot read and write.      X
Number of scholars of various types.     X
Total number of persons in household.   X X

FEDERAL POPULATION CENSUS CONTENT, 1850-1930

CONTENT 1850 1860 1870 1880 1900 1910 1920 1930
Name of every person whose usual place of abode on the census date was in this household. X   X X   X X   X   X X
Dwelling houses are numbered in order of enumerator's visit.   X   X   X   X   X   X   X   X
Families are numbered in order of enumerator's visit.   X   X   X   X   X   X   X   X
Enumeration districts recorded at tops of pages.   X   X   X   X   X   X   X   X
Post office addresses at tops of pages (when applicable).    X   X   X   X   X X   X
Street addresses given in cities.       X X X X X
Age of every person at last birthday prior to census date; 1900 includes month and year of birth.   X   X   X   X   X X X   X
Sex of every person. X X X X X X X X
Relationship of each person to head of household.         X   X   X   X   X
Color or race of every person (1850-1860 included white, black, and mulatto; 1870-1880 added Chinese Indian; 1920-1930 space to record color or race). X X X X X  X X   X
Profession, occupation, or trade of every person.  X   X   X   X   X   X   X   X
Value of real estate owned.   X X          
Value of personal property owned.   X X          
Place of birth and mother tongue (state, territory, or country). X   X   X   X   X   X   X   X
Place of birth and mother tongue of each person's father and mother.         X   X    X   X    X
If person married within the census year; 1870 gives month.   X   X   X   X        
Number of years of marriage.         X X    
Civil (marital) condition; 1930 includes age at first marriage.               X   X
If person attended school within census year; 1930 added college.   X X   X   X   X   X   X   X
If person could not read or write. X X X X X X X  
If person was deaf and dumb, blind, insane, idiotic. X   X   X   X     X    
If person was a pauper or a convict. X X            
Month of birth if born within year prior to census date.     X   X        
If person's father/mother were of foreign birth.       X          
If male person, age 21 or over, whose right to vote was denied/abridged on grounds other than rebellion or other crime.      X          
Time employed during census year; 1930 whether actually at work.         X   X   X     X
Sickness or disability and whether temporary or permanent.       X        
Length of time in U.S. (immigrants) and whether naturalized.           X   X   X   X
If person spoke English.         X X X X
Whether farm or home was rented or owned; if owned, is it mortgage free (except 1930).         X   X   X   X
Value of home or monthly rental.               X
How many children born to a mother and how many still living.           X   X    
If the person were a Civil War veteran or widow.             X    
Gives cross reference to census farm schedule.               X   X
Whether a veteran of the U.S. military of naval forces mobilized for any war or expedition.               X
Whether family has a radio set.               X