What would be considered overweight for a 14 year old female who is 5'1?

Cdc criteria. Average based on US growth charts is that your weight should be about 45 kilo or 100 pounds. Using BMI criteria of overweight being having a BMI of between 25 and 30 that would put your overweight numbers at between 132 pounds (60 kg) and 158 pounds ( 72 kg ).