1957Peak 20172025
Quick answers about Zo
How many people are named Zo?
An estimated 306 living Americans are named Zo.
How rare is Zo?
Zo is very rare among babies today, with 6 girls receiving the name in 2025, down 85% from its 2017 peak.
How old is the typical Zo?
The median age of a living American named Zo is approximately 8 years, with most bearers falling between 5 and 10 years old.
Is Zo still popular?
Not especially. Zo has been declining since its 2017 peak and registered 6 births in 2025.
Where is Zo most common?
Zo has its strongest geographic signal in Arizona, where it appeared 33.7× more often than the national baseline in the 2020s.
Where it lives now
Zo is most concentrated in Arizona — about 33.7× the national rate in the 2020s.
States where Zo is given more often than the national average — its present-day heartland.
3×+
2×+
1.5×+
1.2×+
~ national