[Balding_Eagle]

You have to know where the people live beforehand and there is no single, up to date data base available with accurate and complete information.

They've already finished with that step. They sent out 100,000 workers who visted every house, and entered the data into the Census dat base.

They have the GPS co-ordinates for every front door in the United States.

[Iron Munro]

They've already finished with that step. They sent out 100,000 workers who visted every house, and entered the data into the Census dat base.

They are now cleaning up that effort. Addressing the leftover questions, correcting obvious errors, entering missing data, locating and/or identifying places that couldn't be found or where access was restricted or prohibited, tracking down hard to locate living quarters, etc.
.

[GLDNGUN]

They've already finished with that step. They sent out 100,000 workers who visted every house, and entered the data into the Census dat base.

They have the GPS co-ordinates for every front door in the United States.

All of the prep work is NOT a "one-step" procedure. There are numerous phases before the actual count next year. I don't know if this guy was part of what is called the "Group Quarters" operation, but that is one phase that the USCB is doing right now. This phase does NOT use any devices to enter GPS data.

[mojitojoe]

They have the GPS co-ordinates for every front door in the United States.
_________________
I can assure you they don’t. They may think they do.