To determine the actors with the longest careers, 24/7 Wall St. reviewed the filmographies for the top 5,000 ranked actors aged 35 years old and over on IMDb’s STARmeter. This ranking is a weekly measure of popularity based on user behavior on the Internet Movie Database.
We determined the length of one’s career by finding the number of years that had passed between an actor’s earliest release and their most recent. Television shows were not included in this process. As movies are generally released some time after filming has been completed, some movies have 2020 release dates. In cases where actors had the same amount of time passed between their earliest and most recent movies, their overall number of movie credits were used as a tie-breaker.