Masculine dossier · first seen 1994
Kacper
Stable Decline
Gradual decline from 2007
Peak era
2007
Peak births
88
Current vitality
Rare
Peak generation
Gen Z
Quick answers about Kacper
How many people are named Kacper?
An estimated 1,088 living Americans are named Kacper.
How rare is Kacper?
Kacper is very rare among babies today, with 11 boys receiving the name in 2025, down 87.5% from its 2007 peak.
How old is the typical Kacper?
The median age of a living American named Kacper is approximately 18 years, with most bearers falling between 13 and 21 years old.
Is Kacper still popular?
Not especially. Kacper has been declining since its 2007 peak and registered 11 births in 2025.
Where is Kacper most common?
Kacper has its strongest geographic signal in Illinois, where it appears 14.5× more often than the national baseline.
1994Peak 20072025
Peak year
2007
Decline from peak
87.5%
2025
11
All-time
1,102
Where it lives now
Kacper is most concentrated in Illinois — about 14.5× the national rate in the 2010s.
States where Kacper is given more often than the national average — its present-day heartland.