How to: Search Census Records
A census is a complete listing of a population, and it may contain additional metadata about that population. The most commonly referenced census in the United States is the one conducted every 10 years by the federal government. The census is required by the United States Constitution for the apportionment of seats in the US House of Representatives. The additional demographic data captured by the census varies from decade to decade, and may be useful to researchers. After 72 years, census records become available to the public though the National Archives and Records Administration as well as sites like FamilySearch and Ancestry.
Cities, states, and other organizations may conduct a census too, and this may happen once, intermittently, or at regular intervals. Censuses can even be conducted on non-human populations.
Census records are a valuable tool for anyone conducing genealogical research. They can also be useful for property researchers looking to learn more about who previously lived at a location.
Accessing Census Records
FamilySearch
On any computer
- Go to FamilySearch.org
- Sign in or Create a free account
- Select Records
- Scroll down to “Find a Collection”
- Start typing “United States Census” and then select the year of interest
- Search the census by ancestor’s name
- Or browse records by State, County, Township, and Census Eumeration District
HeritageQuest
On any computer with a New Orleans Public Library Card or on a Library computer:
- Go to lalibcon.state.lib.la.us/
- Sign in with your Library Card number
- Scroll down to HeriageQuest Online and click on it
- Scroll down to “Search US Census” and click “Search Now”
- Use the search boxes to search for a specific person
- Or scroll down to select a specific census to search.
Ancestry.com
On any New Orleans Public Library computer or while connected to the Libray’s wi-fi:
- Go to lalibcon.state.lib.la.us/
- Scroll down to Ancenstry.com Library Edition and click on it
- Scroll down to “Search US Census” and click “Search Now”
- Use the search boxes to search for a specific person
- Or use the boxes on the right to select a specific census to search.
Enumeration Districts
For purposes of counting residents for the Census, the entire country is divided into small Census Enumeration Districts which represent the area of households that a census taker can count in a fixed period of time: 2 weeks worth of counting in a city, and 4 weeks worth of counting in rural areas.
Maps of enumeration districts are held by the National Archives, and many of them can be viewed online. Additionally, addresses can be searched to identify the Enumeration District using the search tool.
Using Census Records
The Census Questionnaires change with each Census. Use this link to the Census Bureau or the button to the right to learn more about what questions were asked every year. Look below to learn about information that is frequently included on the Census:
Names and Relationships
Researcher Hint: If your ancestor had a popular first and last name, checking the names and ages of family members can help you confirm if you are looking at a record for your ancestor, or someone who shared their name.
Ages
Address
Occupation and Education
Demographics
Supplemental Questions
These 2 pages from the 1830 census show that while only the names of the heads of household were recorded, statistics like race, gender, and age were also collected for all who lived at that property.
Grouped Households
Missing Ancestors
Looking for a person who doesn’t appear on the census? There are a variety of reasons why you might not find someone, or why the information provided might not be a perfect match for what you know about them:
- Misspelt name – look at the names of the rest of the family members to see if you can find a match; this can also be matter of handwriting making a name appear misspelt
- Not born yet – if the census taker came through in March, but your relative was not born until July, they will not show up until the next census
- Language barriers – if neither the census taker nor the family are native English speakers and they both speak different languages there could have been a miscommunication
- Transient lifestyle – people who did not have permanent homes in census years could easily be missed
- Not answering the door – whether they happened to be out that day or distrusted sharing information with the government people might not answer
- Fear of repercussions – not wanting to admit how many people are crammed into a space
- Child answering the door – child or other person who does not know all of the information requested by the census cannot provide a full acount
Researcher Hint: You cannot prove a negative. A lack of evidence, such as a missing census record, does not mean that a person did not exist or an event did not happen.
Missing Census Records
Although the census has been taken every 10 years since 1790, the bulk of the 1890 Federal Census was destroyed in a fire. With very few exceptions, there are no Federal Census records from that year available.
Current Census Statistics
Complete census records are publicly released 72 years after they are collected, which means that that next census published will be the 1960 census in 2032. While personal details are kept private during that time, general statistics gathered are available much earlier than that, and can be searched on the census’ website.
Other Census Records
New Orleans Area Censuses
This post primarily focuses on the Federal census, produced every 10 years to count the population of the United States of America and generate other statistics about its population, but there are other states and municipalities that generates their own census records. Additonal censuses held by City Archives & Special Collections:
Census of New Orleans
1791, Spanish
The census is arranged by street of residence of the enumerated individuals, apparently the heads of households.
Census of Second District of the City of New Orleans
1804, English & French
The census counts residents in three broad categories: whites, free persons of color, and enslaved persons.
Census of Merchants and Persons Following Professions Requiring Licenses
1855-1856
A census of all persons subject to the license taxes.
Census of Licensed Merchants
1844-1846
This census, arranged by type of business, gives the name and location of businesses, the date the license was issued, the term of the license, and its expiration date for the City of Lafayette.
Carrollton (La.) Census
1854-1857
This census gives the name and occupation of householders in the City of Carrollton and tallies the number of males and females in each household, and the number of children in general age groups.
Other Federal Censuses
In addition to the Population Schedules collected by the Census, more data on farms, industry, and deaths were collected every ten years throughout parts of the 19th century. Like the Population Counts, these Schedules became increasingly detailed over time, and researchers should be aware that small farms and factories were generally not included.
Today the Census conducts many different surveys that area available for view as well. Check out the Census Survey Explorer to learn more.
Agricultural Schedules
1850 – 1880
Statistics on farms including size, crops, livestock, and equipment.
Available at the National Archives on microfilm, publication number M279.
Manufacturing Schedules
1810 – 1820, 1850-1880
Statistics on materials used and created as well as staffing and machinery of factories.
Available at the National Archives on microfilm, publication number T1136.
Mortality Schedules
1850 – 1880
Statistics on people who died in the year before the census was taken.
Available to search and view through Ancestry.com and HeritageQuest.
Promoting the Census
Since public participation is essential to a gathering a complete census, articles and advertisements were placed in newspapers to encourage people to take part in the census. Some were strictly informative, some shared detils about local hires, there was even a “Song of the Census Man” published by The New York Times and printed in The Times Democrat in 1905.
City Archives staff also joined in the fun in 2012 when the 1940 US Federal Census was released.
This post was written by Amy DeNisco in 2026.
