The average age of the best actor winner was 44, while the average for best actress was 36.
The Guardian looked at the top 20 oldest best actor and best actress winners after 1950, excluding those who had won previously.
The analysis, which looked at the 20 oldest winners in the best actor and best actress categories (excluding those who had won previously), found the average male actor had waited nearly 24 years after his breakthrough performance.
The average age of best actors also saw a slight increase during this period, up to 45 from 43 in the previous decade.