Masculine dossier · first seen 1915

Jac

Stable Cross-generational persistence

Peak era

1956

Peak births

Current vitality

Rare

Peak generation

Boomer

1915Peak 19562025

Quick answers about Jac

An estimated 488 living Americans are named Jac.

Jac is very rare among babies today, with 15 boys receiving the name in 2025, down 16.7% from its 1956 peak.

The median age of a living American named Jac is approximately 24 years, with most bearers falling between 11 and 64 years old.

Yes. Jac is holding steady, with 15 births in 2025 and a consistent recent baseline.

Peak year

1956

Decline from peak

16.7%

2025

All-time

615

Jac peaked in 1956 with 18 boys. Today it has held most of its peak strength, with 15 births in 2025.

Jac peaked in 1956, when 18 boys were given the name.

In 2025, 15 boys were given the name.

Down 16.7% from its peak.

In all, the Social Security Administration has recorded about 615 Americans named Jac since 1915.

Rarity score99th percentile rare

Peak generationBoomer

StabilityHigh cross-era durability

TrajectoryCross-generational persistence

Living profile

488

Estimated living Americans with this name.

Median age24

Core range11–64

Mostly Gen Alpha: about 30% of living people named Jac were born 2013 or later.

Playground Density Index 0.0%

Wave type

Glacier

A long-duration classic distributed across many generations.