What is the average weight for a 22 year old female? I'm 5 foot 6 if that matters. I weigh 117, is this underweight or average?

Ideal Weight. The ideal weight for a 5'6" female is 115-154, so you are right on target. Now this is not average, as the average female in the United States is overweight and above goal. But, basically, you are right where you should be!