Feminine dossier · first seen 1942

Cydney

Endangered Down 96% from peak

Peak era

1998

Peak births

227

Current vitality

Rare

Peak generation

Gen Z

Quick answers about Cydney

How many people are named Cydney?

An estimated 4,817 living Americans are named Cydney.

How rare is Cydney?

Cydney is very rare among babies today, with 9 girls receiving the name in 2025, down 96% from its 1998 peak.

How old is the typical Cydney?

The median age of a living American named Cydney is approximately 28 years, with most bearers falling between 22 and 35 years old.

Is Cydney still popular?

No. Cydney is endangered as a baby name, down 96% from its 1998 peak with 9 births in 2025.

Where is Cydney most common?

Cydney has its strongest geographic signal in California, where it appears 2.5× more often than the national baseline.

1942Peak 19982025

Peak year

1998

Decline from peak

96%

2025

All-time

5,145

Cydney has been in gradual retreat. The last decade averaged 3.3× lower than the decade before it — a slow, steady fade rather than a collapse.

Cydney peaked in 1998, when 227 girls were given the name.

In 2025, only 9 girls were given the name.

Down 96% from its peak.

In all, the Social Security Administration has recorded about 5,145 Americans named Cydney since 1942.

Rarity score99th percentile rare

Peak generationGen Z

StabilityHighly era-bound

TrajectoryDown 96% from peak

Living profile

4,936

Estimated living Americans with this name.

Median age29

Core range22–36

Playground Density Index 0.0%

Wave type

Steady Decline

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

Geographic heartland

California

2.5× higher affinity than the national baseline.

California · 1950s 2.5×

Georgia · 2000s 2.2×

Missouri · 1990s 2.0×