So far you have only provided one source Sharky that says the average height of U.S. presidents is 180cm (5'11):
http://www.presidenstory.com/stat_tal.php
However as I already outlined, that article does not provide the source data for the average height calculation meaning the reader has to simply believe and trust that the writer is correct and is not artificially inflating the figure. I have already manually calculated the average height of all the U.S. presidents provided by Wiki here:
https://en.wikipedia.org/wiki/Height..._United_States
I originally calculated that the 43 presidents listed had a total collective height of 7536cm or an average of 175cm.
However, I just redid the calculations, to double check my own work, and found that I didn't include one of the presidents to get that number.
So my revised numbers are 7729 cms for the 43 presidents which is an average of 179.74 cms or 5 feet and 10.76 inches.
I found the average height of men in the U.S. here:
https://en.wikipedia.org/wiki/Templa...ound_the_world
The average male height for all Americans 20+ is 176.3 cm (5 ft 9 1⁄2 in)
White Americans males 20–39 have an average height of 178.9 cm (5 ft 10 1⁄2 in)
Which means that the average height of the U.S. presidents is about the average height of white males in the U.S.
Hmmm in this case you are right, after double checking my numbers I did locate an error.