I might be a day or so behind, as I just checked my gmail account for genealogy stuff, but Ancestry has indexed all of the 1940 census, and it is now searchable.
This was a huge thing for me, because whenever I tried the tricks offered using the street name and enumeration district from the 1930 census, I came up empty. In my searches, I could not for the life of me, find East Meadow Street in the 1940 census. Stamford, CT was a big city back then, being a huge boom town since the late 1800's, and the massive immigration of the Irish. There was no way I was going to through, page by page by page, to find them. So I waited. Sometimes patiently lol.
This one contains my grandfather, Gordon E. Nichols and his family. Including my great grandfather Arthur E. Nichols, who passed away later in 1940. I am glad he was still alive for the census, although I suspect he was probably already sick.
(Source: Ancestry.com. 1940 United States Federal Census [database on-line]. Provo, UT, USA: Ancestry.com Operations, Inc., 2012.
Original data: United States of America, Bureau of the Census. Sixteenth Census of the United States, 1940. Washington, D.C.: National Archives and Records Administration, 1940. T627, 4,643 rolls.)
I did make a correction to the transcribing, as they were listed as "Nicholas". I can't blame the wonderful indexer, as the handwriting on this one is not great (big surprise there, wonder if they ever thought to make the census takers do a handwriting course).
And this is my grandfather Mayo H. Blanchard, and his family. He is always pretty easy to find, due to his unusual name. I also made a small correction to the transcribing on this one, as my uncle's name is Alfred, not "Affred". That was the census taker's fault.
(Source: Ancestry.com. 1940 United States Federal Census [database on-line]. Provo, UT, USA: Ancestry.com Operations, Inc., 2012. Original data: United States of America, Bureau of the Census. Sixteenth Census of the United States, 1940. Washington, D.C.: National Archives and Records Administration, 1940. T627, 4,643 rolls.)
My father and mother will not show up in the 1940 census, as they were born 1942 and 1943, respectively. But many of my aunts and uncles are there. It is kind of funny to see them as little children. I want to do nothing more than spend the day working to find others, but I must get my homeschool planning done for my boys first, since we begin the new year on Monday.
I will be definitely getting my files set up so that I can get back to searching, as soon as I possibly can.
And I just want to take a minute to thank all those wonderful volunteers who have worked so hard to make the 1940 census available to all of us. It is so appreciated!