| | Diet Nutrition | Weight Watchers How much does a average 10 year old girl weigh who is The average weight of a 10-year-old girl in the United States is between 75 and 100 pounds (34 and 45 kilograms). Weight Watchers - Related Articles Can you get pregnant if use the pull out method 2 days before ovulation? What happens to an antigen-antibody complex? Red Rice Yeast Pros & Cons How to Make Your Teeth Whiter for Free Consequences of a Low-Protein Diet How to Treat a Bowel Obstruction How to Enter Patient Information Into Medisoft