Feminine dossier · first seen 1886
Sydney
Endangered
Down 91.5% from peak
Peak era
2000
Peak births
10,243
Current vitality
Fragile
Peak generation
Gen Z
Quick answers about Sydney
How many people are named Sydney?
An estimated 171,823 living Americans are named Sydney.
How rare is Sydney?
Sydney is moderately uncommon among babies today, with 873 girls receiving the name in 2025, down 91.5% from its 2000 peak.
How old is the typical Sydney?
The median age of a living American named Sydney is approximately 24 years, with most bearers falling between 18 and 29 years old.
Is Sydney still popular?
No. Sydney is endangered as a baby name, down 91.5% from its 2000 peak with 873 births in 2025.
Where is Sydney most common?
Sydney has its strongest geographic signal in California, where it appears 3.1× more often than the national baseline.
1886Peak 20002025
Peak year
2000
Decline from peak
91.5%
2025
873
All-time
178,296
Where it lives now
Sydney is most concentrated in North Dakota — about 3.0× the national rate in the 2000s.
States where Sydney is given more often than the national average — its present-day heartland.