Feminine dossier · first seen 1906
Sonja
Endangered
Down 97.2% from peak
Peak era
1968
Peak births
1,339
Current vitality
Rare
Peak generation
Gen X
Quick answers about Sonja
How many people are named Sonja?
An estimated 28,112 living Americans are named Sonja.
How rare is Sonja?
Sonja is very rare among babies today, with 37 girls receiving the name in 2025, down 97.2% from its 1968 peak.
How old is the typical Sonja?
The median age of a living American named Sonja is approximately 56 years, with most bearers falling between 46 and 63 years old.
Is Sonja still popular?
No. Sonja is endangered as a baby name, down 97.2% from its 1968 peak with 37 births in 2025.
Where is Sonja most common?
Sonja has its strongest geographic signal in Minnesota, where it appears 6.6× more often than the national baseline.
1906Peak 19682025
Peak year
1968
Decline from peak
97.2%
2025
37
All-time
39,513
Where it lives now
Sonja is most concentrated in Minnesota — about 5.3× the national rate in the 2010s.
States where Sonja is given more often than the national average — its present-day heartland.