Tech Tuesday – Unified 1940 Census ED Finder

What a great website:

Over the past couple days and weeks, in preparation for today, I have been taking a report that I created in my genealogy database management software and translated the 1930 Census Enumeration Districts to 1940 Census Enumeration Districts.

Oh, if you what to know why they are different, the answer to that and many other questions are on this website.

When you start at that website, select the US Census menu item, then the Unified 1940 Census ED Finder. That will bring to a page that looks like this.


For my example, this “country boy” is going to find his 7th Cousin, who lived in New York City. This is no ordinary cousin, but I’ll leave her nameless, but she has appeared on this Blog several time.

The New York City Directory for 1940 showed the address of 808 West End Avenue. So, I selected New York, the county New York, and in the pull down menu, selected Manhattan.

Please note, USE the Pull Down Menu every time it is offered. The Correct answer is usually there.

But, just look at all of those Enumeration Districts that are listed in blue below where I entered the address. But wait, we can get that down a bit. Lets see how much closer we can get.



Wonder what this is going to do.


How cool is that. There is the address, even a Street View. I have done that a number of times today. The best example was in a previous blog post where I found the apartment where my folks lived in the 1940 Census. Never saw that place before, but it was only a block away from where my grandparents (Mom’s side) lived as I grew up.

Leaning: The Tool is a real help, but there is a trick, when going to “SEE MAP”. IF you end up where you do not expect to, look at the Street Address in the Google Search Box.

For example: If you have a street name, like West Barnard Street, the Pull Down Menu will list Barnard E and Barnard W, one under the other. That is cool, and makes a lot of sense. BUT, when it is sent to Google Maps, if will come out Barnard E or Barnard W. Don’t panic, just re-type the address it the more correct fashion. E Barnard Street.

What is important on this map, is the 4 streets that are around the address you are looking for. That is how the Enumeration Districts were laid out.


If you Select 1940 ED Description, then More Details, you will see more details.


Back to the map, I see West 99th, West 100th, Riverside Drive, and Broadway as the surrounding street names.

Switching back to the ED finder:


As I said earlier, the pull down menu is a real help. The first box says “Cross or block street on same city block”. I selected 99th W, and in the next box (pull down menu) I selected 100th W. This is an illustration of the Barnard Street East and West mentioned earlier. The street names are together, and the direction follows the street name.


Pull down menu, Riverside Drive


Notice, I didn’t have to enter the 4th street, in this example. I am now down to ONE ED, 31-734.

By clicking on that ED Number, you will be taken to the image for that ED.


Once you download the image, then it’s a manual looking at the images to find who you are looking for.

There are other websites that may also have the Digital Images, but this Enumeration District Unified Finder will help you locate the ED that you are looking for.

Check out this website and see if it helps. It helped me.

Thank you Steve P Morris, PhD and Joel Weintraub, PhD AND the Volunteers who put this tool together.

Gotta get back to Indexing.


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