Template:US geo ref

Required parameters
The first unlabeled parameter (ie. ) should contain a number indicating which of the following notes should be displayed:
 * 1)  Annual estimates of the population through . Released.
 * 2)  Historical census reports are available in PDF.
 * 3) An additional source of county seats by state is Campbell's List.
 * 1)  Historical census reports are available in PDF.
 * 2) An additional source of county seats by state is Campbell's List.
 * 1) An additional source of county seats by state is Campbell's List.

Only the third note contains additional required parameters for the date of the population estimate and the date it was released.

Example usage:
 *  
 *  