I am a 23 year old male with a weight about 148 pounds. I wanted to know if that is an average weight for my age group? Thank you

How tall? You can find your BMI on a BMI calculator on the internet. It requires your weight and height. If the BMI is between 18 and 25, you are fine. Go to this site for BMI calculation: http://www.nhlbi.nih.gov/health/educational/lose_wt/BMI/bmicalc.htm.