Feminine dossier · first seen 1983
Siera
Stable Decline
Gradual decline from 1998
Peak era
1998
Peak births
150
Current vitality
Rare
Peak generation
Gen Z
Quick answers about Siera
How many people are named Siera?
An estimated 2,483 living Americans are named Siera.
How rare is Siera?
Siera is very rare among babies today, with 7 girls receiving the name in 2025, down 95.3% from its 1998 peak.
How old is the typical Siera?
The median age of a living American named Siera is approximately 29 years, with most bearers falling between 24 and 34 years old.
Is Siera still popular?
Not especially. Siera has been declining since its 1998 peak and registered 7 births in 2025.
Where is Siera most common?
Siera has its strongest geographic signal in Ohio, where it appears 1.9× more often than the national baseline.
1983Peak 19982025
Peak year
1998
Decline from peak
95.3%
2025
7
All-time
2,543
Where it lives now
Siera is most concentrated in Ohio — about 1.9× the national rate in the 1990s. It also runs high in Florida.
States where Siera is given more often than the national average — its present-day heartland.