Average baby weight and length chart by month In the United States, the average baby weighs just over 7 pounds at birth. Girls (at 7 pounds, 1 ounce/3.2 kg) are a bit smaller than boys (at 7 ...

Average Baby Weight at 2 Months Generally, babies this age will continue to gain about 1.5 to 2 pounds each month. This usually puts them at about 2 to 4 pounds over birth weight at 2 months old ...

Because teens' bodies are still developing, a teen's average weight and height can fluctuate quite a bit from one year to the next, finally stabilizing around 18-20 years of age.

Researchers from the CDC found that the average weight of U.S. men over the age of 20 has increased to 195.7 pounds, according to data from 2011 to 2014.