It's very high. Mensa, a group for people who score high on IQ tests, admits the top 2 percentile, which is approximately 140-145, depending on the test, etc.
Once upon a time, I remember one survey that said the average IQ of a PhD was about 130. Given the proliferation of PhDs since then, I'm sure the numbers have changed some.
Just about every day, I find myself observing that "We all have our strengths and weaknesses."
I have a big vocabulary, so tend to write IQ tests easily, On the other hand, I have trouble with spatial concepts. It's really difficult to drive in an unknown district, and my packing skills are pathetic. Oliver Sacks writes about 'idiot savants', people who are severly intellectually challenged, but have outstanding skills and talents in other areas.