I don't have a ready to use solution, because I rarely do 3D, but I know this topic comes up regularly.
Use the search from the main site, not this forum's search, more limited.

I did quite a lot of research. Actually, about a week's worth, and a solution has not cropped up. Perhaps there is someone I could work with on a solution that has not yet been created? I am really unsure how to even begin experimenting with it after what I have already done. I have not found any contributed library's that help either, but there was one forums that had a kind of answer, but it involved the camera, not moving the entire data field, so I wasn't able to get even a line of useful code from it, nor any new ideas. I may end up having to find an alternative to the way I label things in the data field, which I would also be open to, not that I would expect anyone to know what I am even doing exactly, so I will need to come up with specific alternatives myself if I cannot figure out a solution to this problem first.

Is there a way, perhaps, to do a set of preliminary rotations that will move the text in the desired direction, while allowing for the regular rotations and translates to happen afterwards?  Only way I can think of something like that is a pushMatrix inside of a pushMatrix, but I would need to test that, as it sounds silly.

The code below shows how you can mix 2D and 3D

[EDIT] I have modified the code - I had forgotten about using the hint()

1. float rotX, rotY, rotZ;
2. 
   
3. void setup(){
4.   size(300,300,P3D); 
5. }
6. 
   
7. void draw(){
8.   rotX += 0.03;
9.   rotY += 0.05;
10.   rotZ += 0.07;
11.   background(0);
12.   pushMatrix();
13.   translate(width/2, height/2, 0);
14.   rotateX(rotX);
15.   rotateY(rotX);
16.   rotateZ(rotX);
17.   fill(255,0,0);
18.   box(60);
19.   popMatrix();
20.   hint(DISABLE_DEPTH_TEST);
21.   fill(255);
22.   text("Quarks was here", 150,150);
23.   hint(ENABLE_DEPTH_TEST);
24. }

 
 

You could try something like this.

hint(DISABLE_DEPTH_TEST);
pushMatrix();
resetMatrix();
//possible transforms
camera();
//you might need to use the above to reset the camera if you're using it
//draw text
popMatrix();
hint(ENABLE_DEPTH_TEST);

You might be okay without the matrix stuff, but I think the hint(...) stuff might be what you really want.

See: http://www.lighthouse3d.com/opengl/billboarding/

Hey guys, these are a lot of great responses so far! Thank you. However, I have yet to get any of these to work, one is because I am not using a camera. I will do more research into the math contained within the link that amnon gave. I will share some code you you guys can see what I am working with. One interesting thing is, when I put the data field inside a matrix, then put the text inside its own matrix using the exact same methods used to manipulate the data field, the text does not show up at all. Here is a sample of what is inside the single matrix I have, where the test is present, but not moving (the hints did not work, but I may have not implemented them correctly).

This is a modification of the code I posted earlier - the text is now pinned to one of the cube corners and there are no calls to camera()

1. float rotX, rotY, rotZ;
2. 
   
3. void setup(){
4.   size(300,300,P3D); 
5. }
6. 
   
7. void draw(){
8.   rotX += 0.03;
9.   rotY += 0.05;
10.   rotZ += 0.07;
11.   background(0);
12.   pushMatrix();
13.   translate(width/2, height/2, 0);
14.   rotateX(rotX);
15.   rotateY(rotX);
16.   rotateZ(rotX);
17.   fill(255,0,0);
18.   box(60);
19.   float x = screenX(30,30,30);
20.   float y = screenY(30,30,30);
21.   popMatrix();
22.   hint(DISABLE_DEPTH_TEST);
23.   fill(255);
24.  
25.   text("Quarks was here", x, y);
26.   hint(ENABLE_DEPTH_TEST);
27. }

Thanks for the code Quarks. There are a few issues I am still having, but I will tell you that I did see some text moving around the data field like I desire, that's great! But they are misplaced, I will see what I can do to troublshoot that, as I believe that its the translates and stuff that are the issue, since I had to use your method outside the matrix containing these positions. It looks like that shouldn't be an issue, but I will post again when I know more.

So here is the latest, in the code below, the text seems to do the right thing, but I am only getting the last city label in the CSV file, which is actually outside the parameters for what is normally drawn, and it is centered on the screen where I don't think its supposed to be. But, one problem at a time, how do you think I should go about reading through each of the cities?