As a longtime Disney fan who's spent way too much time analyzing villains, Jafar's age is a topic that's surprisingly debated. In 'Aladdin', he's clearly an older, established figure in Agrabah's court, likely in his late 40s to early 60s based on his position as Grand Vizier. The animators gave him wrinkles, graying hair, and a slightly hunched posture to emphasize his scheming nature.
What's fascinating is how his age contrasts with his ambitions—he's not some young upstart but a seasoned manipulator who's waited years for power. The 2019 live-action version aged him up further, with his actor being around 60 during filming. Interestingly, prequel materials like the TV series hint he wasn't always this bitter, suggesting decades of resentment built up over time. His exact birth year isn't canon, but his age is crucial to understanding his desperation for the lamp—it's a last grasp at power before old age truly claims him.