Average penis size in United States 🇺🇸

The figure comes from Wessells et al., J Urol, 1996, which measured 80 men. Method: measured by one examiner.

This study didn't record a bone-pressed measurement, so it reads roughly a centimetre lower than a bone-pressed study of the same men would. Compare this row against a bone-pressed one and part of what you're seeing is the ruler.

With 80 men measured, this is one of the smaller samples in the game and the figure should be read as noisier than the rows resting on thousands.

Wessells measured 80 men before and after a pharmacologically induced erection, and the paper's stated purpose was to give surgeons a baseline for counselling men asking about penile augmentation. Eighty is a small sample for a country this size, and it is a clinic population rather than a random one. The same paper is also the origin of the convention this entire site rests on: it found that stretched length tracks erect length more closely than flaccid length does, which is why stretched length is the measure urologists report.

United States ranks #17 of the 24 countries in the game. That is 0.32 cm below the median of this list (12.77 cm).

Both of those comparisons are against a list of two dozen countries chosen by which studies exist, not by any sampling of the world. Treat the rank as a fact about this dataset rather than a fact about the planet.

United States has been the daily puzzle 2 times so far. Each of those days has its own archive page.

It doesn't describe any individual man from United States. The spread between individual men inside a single country runs several times larger than the gap between any two countries on this list, so a national average carries almost no information about a person.

Nor is it medical advice, or a benchmark to measure yourself against. If size is something you've been worrying about, the guide on what the pooled data actually shows is a more useful page than this one, and a doctor is more useful than either.