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Genealogy Resources: Home


MCC librarians have put together a list of genealogical resources!

Want to know more about your family origins? Click on the database links and see what you can find! 

1940 US Census

The National Archives released the 1940 census to the public on April 2, 2012 after a mandatory 72-year waiting period.The 1940 census was taken in April 1940 (official date was April 1, though entries were recorded throughout early April). The Federal government requires a census to be taken once every ten years for the apportionment of members of the U.S. House of Representatives. The first census was taken in 1790. Over the years, the format of census schedules changed and more questions were asked.

Census records are the only records that describe the entire population of the United States on a particular day. The 1940 census is no different. The answers given to the census takers tell us, in detail, what the United States looked like on April 1, 1940, and what issues were most relevant to Americans after a decade of economic depression.



1. Getting started

2. Search the 1940 census

Family Tree


Where to start

We have broken down the guide into the following categories. If at any point you have any questions about identifying or using the Library's collections, please ask a librarian for help.

It is important to note that most genealogical databases use the 1940 census as their main data resource. Please browse the 1940 census section below for more information. 

Using the Library
This section is especially intended for those who may need a book or physical item from our library.

Illinois Counties
This section breaks down resources by county, listing a sampling of county histories and other information.

United States Resources
This section lists examples of resources available at the federal level. 

Foreign/Religious Resources
Here you will find links to foreign organizations that can have records like communions, marriages, etc...

Web Resources
Few subjects are as extensively represented on the World Wide Web as genealogy, and there are excellent sites that categorize the resources available on the web. Here we list web-based databases that are available for use by anyone at public computers in the Library, or for use anywhere to current affiliates of MCC.

MCC Library Info

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Questions? To contact an MCC Librarian, click on

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