The average weight for a healthy newborn in the united states (with an average height of 18 to 22 inches long) would be approximately 7.5 pounds.
Full term babies typically weigh between 5 lbs and 11 1/2 ounces and 8 lbs and 5 3/4 ounces at birth. Eighty percent of full-term infants are born in this range. Babies born above the 90th percentile are considered "large" babies, and babies born below the 10th percentile are considered "small" babies. Low birth weight represents a 5.5 lb newborn baby. It can occur if the child is prematurely born. These babies may be at increased risk of serious health problems.
