Feminine dossier · first seen 1945

Sydnee

Endangered Down 97.2% from peak

Peak era

2003

Peak births

506

Current vitality

Rare

Peak generation

Gen Z

1945Peak 20032025

Quick answers about Sydnee

How many people are named Sydnee?

An estimated 8,133 living Americans are named Sydnee.

How rare is Sydnee?

Sydnee is very rare among babies today, with 14 girls receiving the name in 2025, down 97.2% from its 2003 peak.

How old is the typical Sydnee?

The median age of a living American named Sydnee is approximately 24 years, with most bearers falling between 18 and 28 years old.

Is Sydnee still popular?

No. Sydnee is endangered as a baby name, down 97.2% from its 2003 peak with 14 births in 2025.

Peak year

2003

Decline from peak

97.2%

2025

All-time

8,255

Diaspora map

Sydnee spread fast — broke out in Utah (1997) and ran high in 7 states within a decade.

Broke out: Utah, 1997 · over-represented in 7 states over 6 years

Sydnee has been in gradual retreat. The last decade averaged 5.2× lower than the decade before it — a slow, steady fade rather than a collapse.

Sydnee peaked in 2003, when 506 girls were given the name.

In 2025, only 14 girls were given the name.

Down 97.2% from its peak.

In all, the Social Security Administration has recorded about 8,255 Americans named Sydnee since 1945.

Rarity score99th percentile rare

Peak generationGen Z

StabilityHighly era-bound

TrajectoryDown 97.2% from peak

2003506 girls named Sydnee

202514 girls named Sydnee

Living profile

8,133

Estimated living Americans with this name.

Median age24

Core range18–28

Playground Density Index 0.0%

Wave type

Steady Decline

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