How Many People Are Named Alonzo?
people named Alonzo are alive in the United States today (estimate)
About 1 in 10,785 people in the US has this name
Based on 46,109 babies named Alonzo in Social Security records from 1880 to 2025, and the share of each birth year still alive in 2025.
Popularity Rank
💎 Rare
Peak Year
651 births
Trend
Stable (last 10 years)
📖 Name Origin & Meaning
Meaning:
Italian variant of ALFONSO.
Source of the meaning, origin, pronunciation and related names: Behind the Name.
⚧ Gender Distribution
Almost all of the babies given the name Alonzo (99.6%) were boys.
👥 Age Distribution
The average person named Alonzo alive today is about 35 years old, and 46% are under 30. Half of them were between 14 and 55 in 2025.
📈 Popularity Over Time
Alonzo first appears in the records in 1880 and was given most often in 2022, to 651 babies. In 2025, 590 babies got the name.
Babies given the name each year, 1880 to 2025
🏆 Rank History
Alonzo has never been one of the 100 most popular boys' names. Its best rank was #110, in 1880 to 1881. In 2025 it ranked #511.
| Boys | |
|---|---|
| Rank in 2025 | #511 |
| Best rank | #110 (1880 to 1881) |
| Years in the top 100 | None |
| Rank in its biggest decade | #538 in the 2010s |
📍 State-Wise Distribution
People named Alonzo alive today, by the state where they were born (estimate; state records start in 1910).
More people named Alonzo were born in California than in any other state: about 4,894 of those alive today. Compared with the national rate in the same years, Alonzo was given 2.7 times as often in District of Columbia, 2.5 times in Mississippi and 2.4 times in South Carolina.
Look up another name
⊙ We don't save the names you search.