Masculine dossier · first seen 1880
Alonzo
Stable
Cross-generational persistence
Peak era
2022
Peak births
651
Current vitality
Fragile
Peak generation
Gen Alpha
Quick answers about Alonzo
How many people are named Alonzo?
An estimated 30,828 living Americans are named Alonzo.
How rare is Alonzo?
Alonzo is moderately uncommon among babies today, with 590 boys receiving the name in 2025, down 9.4% from its 2022 peak.
How old is the typical Alonzo?
The median age of a living American named Alonzo is approximately 32 years, with most bearers falling between 14 and 55 years old.
Is Alonzo still popular?
Yes. Alonzo is holding steady, with 590 births in 2025 and a consistent recent baseline.
Where is Alonzo most common?
Alonzo has its strongest geographic signal in District of Columbia, where it appears 5.3× more often than the national baseline.
1880Peak 20222025
Peak year
2022
Decline from peak
9.4%
2025
590
All-time
45,955
Where it lives now
Alonzo is most concentrated in District of Columbia — about 5.3× the national rate in the 1990s.
States where Alonzo is given more often than the national average — its present-day heartland.