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Jack
759,677 recorded births · active 1880–2025
Living-age distribution
The median living Jack is 24. If you meet a Jack, there's about a 70% chance they're between 8 and 73 years old.
Popularity arc
● Comeback KidPopular, faded for decades, then surged back.
Peak Jack: 1930. Down 53% from peak.
Geographic fingerprint
Jacks are 1.4x more common in the Midwest than the national average.