Feminine dossier · first seen 1981

Kailyn

Stable Decline Gradual decline from 2011

Peak era

2011

Peak births

793

Current vitality

Fragile

Peak generation

Gen Z

1981Peak 20112025

Quick answers about Kailyn

How many people are named Kailyn?

An estimated 14,060 living Americans are named Kailyn.

How rare is Kailyn?

Kailyn is uncommon among babies today, with 110 girls receiving the name in 2025, down 86.1% from its 2011 peak.

How old is the typical Kailyn?

The median age of a living American named Kailyn is approximately 18 years, with most bearers falling between 13 and 25 years old.

Is Kailyn still popular?

Not especially. Kailyn has been declining since its 2011 peak and registered 110 births in 2025.

Peak year

2011

Decline from peak

86.1%

2025

110

All-time

14,211

Diaspora map

Kailyn broke out in Louisiana, Missouri, and Virginia (1999) and became over-represented in 13 states over 17 years.

Broke out: Louisiana, Missouri, and Virginia, 1999 · over-represented in 13 states over 17 years

Kailyn has been in gradual retreat. The last decade averaged 3.1× lower than the decade before it — a slow, steady fade rather than a collapse.

Kailyn peaked in 2011, when 793 girls were given the name.

In 2025, only 110 girls were given the name.

Down 86.1% from its peak.

In all, the Social Security Administration has recorded about 14,211 Americans named Kailyn since 1981.

Rarity scoreVery uncommon

Peak generationGen Z

StabilityEra-bound, still legible

TrajectoryGradual decline from 2011

2011793 girls named Kailyn

2025110 girls named Kailyn

Living profile

14,060

Estimated living Americans with this name.

Median age18

Core range13–25

Playground Density Index 0.2%

Wave type

Steady Decline

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