| | Family Health | Baby Health What is the average weight for a baby in US? According to the American Academy of Pediatrics, the average weight for a newborn baby in the United States is between 6 and 9 pounds (2.7 and 4.1 kilograms). Baby Health - Related Articles What gender of baby are you most likely going to get? Acid Reflux in School-age Children Sleeping Habits of a One-Month Old Baby What Is Phosphatidyl Glycerol? How do you get rid of lice on a baby? How Well Can Newborn Babies See? When to Call the Doctor for a Child's Fever