United States, Enumeration District Maps for the Twelfth through the Sixteenth Censuses - FamilySearch Historical Records

United States

What is in the Collection?
The collection consists of digital images of National Archives microfilm publication A3378, reproductions of enumeration district maps for the 1900, 1910, 1920, 1930 and 1940 censuses. Each census year, the nation was divided into enumeration districts. An enumeration district was an area that could be covered by a single census taker in one census period. Enumeration districts varied in size from one city block in urban areas to an entire county in rural areas.

What Can this Collection Tell Me?
The maps highlight the boundaries of individual enumeration districts.

How Do I Search the Collection?
To begin your search it is helpful to know the following:


 * The census year
 * The approximate address or residence of your ancestor

View images in this collection by visiting the Browse Page: To search the collection you will need to follow this series of links: ⇒Select "Browse through images" on the initial collection page ⇒Select the “NARA Roll Number - Contents" category which takes you to the images

What Do I Do Next?
Use the maps to determine the appropriate enumeration district for you ancestor's residence for each census year.

Look at each image comparing the information with the address for your ancestor until you find the map which is appropriate. Then search that enumeration district of the population schedule for your ancestor's family.

The maps are especially helpful if you cannot locate your ancestor in the census index by enabling you to search a specific street or neighborhood.

Citing this Collection
Citing your sources makes it easy for others to find and evaluate the records you used. When you copy information from a record, list where you found that information. Here you can find citations already created for the entire collection and for each individual record or image.

Collection Citation:

Image citation: