How long until a killer whale is fully grown?

Killer whales, or orcas, typically reach full growth by the age of 15 to 20 years. Males usually grow larger and take longer to mature, often reaching their full size around 20 to 26 years, while females tend to be fully grown by about 15 to 20 years. Adult male orcas can weigh up to 12,000 pounds, while females generally weigh around 8,000 pounds. Factors such as diet and environmental conditions can influence their growth rates.