Masculine dossier · first seen 1918

Sebastain

Stable Cross-generational persistence

Peak era

2002

Peak births

Current vitality

Rare

Peak generation

Gen Z

1918Peak 20022025

Quick answers about Sebastain

An estimated 494 living Americans are named Sebastain.

Sebastain is very rare among babies today, with 9 boys receiving the name in 2025, down 62.5% from its 2002 peak.

The median age of a living American named Sebastain is approximately 21 years, with most bearers falling between 12 and 29 years old.

Yes. Sebastain is holding steady, with 9 births in 2025 and a consistent recent baseline.

Peak year

2002

Decline from peak

62.5%

2025

All-time

510

Sebastain peaked in 2002 with 24 boys. Today it is down 63% from its 2002 high, with 9 births in 2025.

Sebastain peaked in 2002, when 24 boys were given the name.

In 2025, only 9 boys were given the name.

Down 62.5% from its peak.

In all, the Social Security Administration has recorded about 510 Americans named Sebastain since 1918.

Rarity score99th percentile rare

Peak generationGen Z

StabilityModerate cultural durability

TrajectoryCross-generational persistence

Living profile

494

Estimated living Americans with this name.

Median age21

Core range12–29

Mostly Gen Z: about 47% of living people named Sebastain were born 1997–2012.

Playground Density Index 0.0%

Wave type

Steady Decline

A name with a broad middle and a downward recent trajectory.