Next, use the address and cross streets from the map to determine the correct 1940 Census Enumeration District. The National Archives has 1940 census Enumeration District maps and descriptions available online through their free Online Public Access tool. To make this process even easier, try the 1940 Census ED One-Step tools developed by Stephen P. Morse, PhD and Joel D. Weintraub, PhD. Just enter the state, county, city (when applicable), and address, and the database will, in most cases, identify the correct ED. If the best information you have is an ED from the 1930 census, then they have a tool to help you convert that to a 1940 census ED as well. Learn more about how to use these tools in the step-by-step examples below.
With your Enumeration District identified, you can now navigate directly to that ED in the 1940 census images online, leaving you with only about 30-32 double-sided census pages to browse (about 60 digital images) for your name(s) of interest.