Yes, I have, actually. Can't say where it's gone astray, but I cannot lay my hands on my household's 2010 Census form. Fortunately, the Bureau tells me on their website that they'll likely send another, once they notice mine is missing. They're watching me, like hawks, they are. They will not be ignored, even inadvertently.
So, it may not have come to your attention, but the Census Bureau has launched a promotional campaign and incentive program this year to encourage all of us to respond to our Census Questionnaires. It seems that, once all the forms have been returned and their contents scrupulously tabulated, each and every one of them will be tossed into the churning interior of an enormous spinning drum of unique and remarkable design now under construction somewhere in central Montana, from which The President Himself, amid Flourishes and Fanfares, and in the presence of Worthy and Celebrated Guests, each of whom in his or her own fashion exemplifies the Story of Our Nation, will draw One Lucky Respondent's Form.
The aforesaid Lucky Respondent will thereafter be memorialized with a Monument in a Location of Due Importance to be designated later. A public employees' holiday may ultimately be announced in honor of this as yet Unknown, but presumptively exemplary, Citizen.
Here is a preview of the Short Film that will be shown at regular intervals at the Visitor's Center to be constructed at or near the future, thus far unbuilt but shovel-ready, Monument:
Photo: "Wooden chest, cased, lined and bound in iron and secured by three different locks, in which Domesday Book was kept stored from about 1600." Via the UK National Archives.