As of 2000, the average adult male in the US was 5' 10" and the standard deviation was 2.5" (for adult women the mean was 5'4.5" with the same standard deviation) (Source: every statistics textbook published in the Oughts in the US). An adult male standing 5'7" would be more than a full standard deviation below the mean, which means it would be one of the things someone trying to describe him would mention - "Well, he had dark hair, he was pale, and he was kind of short." But he's not two SD shorter than average, so it probably wouldn't be the first thing they'd mention.