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The short answer
Alonzo is a masculine name used in English. Behind the Name describes it this way: "Variant of Alonso in use in America." It ranked #511 for boys in the United States in 2025.
Meaning and etymology
According to Behind the Name, variant of Alonso in use in America. The entry lists its usage as English (American).
Editorial confidence: likely
Popularity
Alonzo ranked #511 for boys in the United States in 2025. The figure comes from the Social Security Administration's national file for that year.
| Region | Year | Rank | Source |
|---|---|---|---|
| United States | 2025 | #511 | ssa-2025 |
If you like this name
Names that Behind the Name files under the same origin (English) and that sit near Alonzo in the 2025 American rankings.
Similar by origin
Frequently asked questions
What does the name Alonzo mean?
Behind the Name does not give Alonzo a one-word meaning. It describes the name as follows: variant of Alonso in use in America.
Is Alonzo a popular name?
Alonzo ranked #511 for boys in the United States in 2025. (Social Security Administration data).
Is Alonzo a boy's or a girl's name?
In the 2025 SSA data Alonzo appears in the boys' list; Behind the Name labels it masculine.
Sources
- Behind the Name: Meaning, origin and history of the name Alonzo — supports meaning, usage, pronunciation, variants.
- U.S. Social Security Administration: Popular Baby Names — national data, year of birth 2025 — supports popularity.
