United States Census, 1870 - FamilySearch Historical Records

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Collection Time Period
The U.S. federal census was conducted each decade from 1790-present. This information pertains to censuses conducted in 1850, 1860, and 1870.

Collection History
Federal census takers were asked to record information about all those who were in each household on the census day, which was 1 June. A census taker might have visited a house on a later date, but the information he collected was supposed to be about the people who were in the house on the census day. The basic census enumeration unit was the county. Each county was divided into enumeration districts, one for each enumerator. The completed forms were sent to the Census Office in the Commerce Department in Washington D.C. The 1870 census covers 80-90% of the population.

Why This Collection Was Created
The U.S. federal census was taken at the beginning of every decade to apportion the number of representatives that a state could send to the House of Representatives in Congress. In the absence of a national system of vital registration, many vital statistics and personal questions were asked to provide a statistical profile of the nation and its states.

Collection Reliability
Federal censuses are usually reliable, depending on the knowledge of the informant and the care of the census enumerator. Information may have been given to a census taker by any member of the family or by a neighbor. Some information may have been incorrect or deliberately falsified.

Collection Description
Federal censuses are usually reliable, depending on the knowledge of the informant and the care of the census enumerator. Information may have been given to a census taker by any member of the family or by a neighbor. Some information may have been incorrect or deliberately falsified.

Record Content
Important genealogical information in the 1850-1870 censuses:


 * Full name


 * Age (can be used to approximate birth year)
 * Sex
 * Race
 * Birthplace
 * Occupation
 * Whether married during the previous year
 * Town, township, or post office of residence

In addition the 1870 census recorded:


 * Month of birth if born during the previous year
 * Month of marriage if married during the previous year
 * Whether the father and mother of each person was born in a foreign country

How To Use The Collection
The U.S. federal census is the best source to quickly identify a family group and residence. Use the place of residence, and the birth state for each person along with his or her age to search for other record types. The census identifies other persons in the household and how they are related. The census may identify persons for whom other records do not exist.

Related Websites
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Related Wiki Articles
United States Federal Census

Sources of Information For This Collection
United States. Census Office. [No. from 7th to 9th] census, [Census year]. Downloaded from URL, date downloaded. Digital identification number if any. State, county, specific place (either town, township, city, ward, etc.), sheet number, line number.

United States. Census Office. [No. from 7th to 9th] census, [Census year]. The National Archives, [Filming year]. Microform number, item number. State, county, specific place (either town, township, city, ward, etc.), sheet number, line number.

How To Cite Your Sources
Instruction for citing this source can be found at: Cite Your Sources (Source Footnotes)