Masculine dossier · first seen 1880
Sidney
Endangered
Down 92.2% from peak
Peak era
1918
Peak births
1,879
Current vitality
Fragile
Peak generation
Greatest Generation
1880Peak 19182025
Quick answers about Sidney
How many people are named Sidney?
An estimated 34,949 living Americans are named Sidney.
How rare is Sidney?
Sidney is uncommon among babies today, with 146 boys receiving the name in 2025, down 92.2% from its 1918 peak.
How old is the typical Sidney?
The median age of a living American named Sidney is approximately 59 years, with most bearers falling between 35 and 73 years old.
Is Sidney still popular?
No. Sidney is endangered as a baby name, down 92.2% from its 1918 peak with 146 births in 2025.
Peak year
1918
Decline from peak
92.2%
2025
146
All-time
84,202