Is it a white person?

Check here.

mudpuppie: bike fit isn't really simple and part of it depends on rider's proportions (torso length vs. inseam length (total inseam, not pants inseam BTW)) but it sounds like you want a "medium" or 17-18" frame, either or.

Unless the rider is super short in the arms/torso, then a small (15-16") maybe appropriate. You can fix some of that length issue with shorter stem lengths, changing the seatpost to a non-setback, etcetera but a lot of the perceived comfort in bike fit is in the length and how correctly the rider is "centred" over the cranks, not in the height / standover clearance, so if you get one that's too long, even if the standover is correct, it'll be very hard for the rider to get a comfortable balanced position on it without making a lot of potentially expensive parts swaps.

so the answer is "it depends" but going with no other data than height, I'd check the medium / 17" range first.

Doohickie, that's a road bike size chart - they're looking for dirt bikes, dude.

Yeah, I know.... I was on my way out the door when I posted that.

Hmm.. I'm 6', and I always rode 18" MTB frames. I'd point you towards a 16" bike as a starting point. Otherwise I agree wholeheartedly with LFR about centering. Plus it's been a long time since I was a bike shop rat, so my heuristics may be out of whack.

Be aware that the "inch" sizes of bike frames are no longer pegged to any physical measurement, and should be seen as relative only to other products by the same maker. Officially, the measurement in question is the distance from the center of the bottom bracket spindle (e.g. the cranks) to the (center or top) of the top tube IF AND ONLY IF the top tube is perfectly horizontal. However, perfectly horizontal top tubes went out of fashion in 1990 or so. These days, everything slopes heavily, and the measurement now refers to an imaginary point in space. So you're basically stuck looking for a sticker, taking someone's word, or finding the mfgr. catalog for that year and extrapolating from the given measurements.

If your're looking in the SF area, I'm happy to offer advice & quick mechanical check-outs.