Home / Name Directory / Alonzo
How Many People Are Named Alonzo?
Estimated people named Alonzo living in the U.S. today
31,795
Gender distribution
100% male · 0% female in SSA records.
Name scorecard
- Total U.S. births recorded (1880–2024): 45,514
- Peak year: 2022 (651 births)
- Estimated living today: 31,795
Alonzo by age group — who carries the name today?
Alonzo popularity over time (1880–2024)
Estimated living bearers by birth decade
About the name Alonzo
Alonzo has been recorded by the Social Security Administration since the 19th century dataset began. In total, 45,514 babies were given the name in the United States between 1880 and 2024. After adjusting each birth cohort for survival to today, an estimated 31,795 bearers are still living — roughly 1 in 10,750 Americans. The name's strongest decade shapes how old most Alonzos you meet will be, which the age-group breakdown above shows directly. All figures are statistical estimates from public records; see our methodology for sources, the survival model, and the limits of the data (names given to fewer than five babies in a year are not published by the SSA).
Frequently asked questions
How many people are named Alonzo in the US?
An estimated 31,795 people named Alonzo are living in the United States today, based on SSA birth records from 1880 to 2024 adjusted for survival. That makes Alonzo rare — about 1 in 10,750 Americans.
Is Alonzo a boy or girl name?
In SSA records, Alonzo is 100% male and 0% female, so it is predominantly a male name.
When was Alonzo most popular?
Alonzo peaked in 2022, when 651 babies were given the name. Its current trend is rising compared with the previous decade.
How rare is the name Alonzo?
Alonzo ranks #1,206 of 104,819 first names recorded by the SSA, with a rarity score of 47 out of 100 (higher means rarer).