how old is a child at 30 lbs
Report Abuse. My son was 18 lbs at 1 year. He reached 30 lbs around 2 years old. My oldest son was 25 lbs at 1 year old and reached 30lbs around 2 years old. My niece was 22 lbs at 1 year old. She will be two in September and hasn't reached 30 lbs yet.I think she weighs 27 lbs now.eport Abuse. My son was 18 lbs at 1 year. He reached 30 lbs around 2 years old. My oldest son was 25 lbs at 1 year old and reached 30lbs around 2 years old. My niece was 22 lbs at 1 year old. She will be two in September and hasn't reached 30 lbs yet.