Declining since 1988, #3,949 for boys today.
Popularity of Alfonzo since 1889
Babies named Alfonzo per year in U.S. Social Security records. Raw births topped out in 1970, but relative to how few babies were recorded back then, Alfonzo's real moment was 1909.
Data table (by decade)
| Decade | Boys |
|---|---|
| 1880s | 8 |
| 1890s | 5 |
| 1900s | 83 |
| 1910s | 221 |
| 1920s | 368 |
| 1930s | 382 |
| 1940s | 473 |
| 1950s | 701 |
| 1960s | 669 |
| 1970s | 802 |
| 1980s | 669 |
| 1990s | 586 |
| 2000s | 396 |
| 2010s | 280 |
| 2020s | 140 |
Meaning & origin
Alfonzo is a distinctive variant of the classic Alfonso, with roots in Spanish and Italian royalty. First recorded in the U.S. in 1889, it peaked in popularity in 1909. Since 1988, its usage has been steadily declining: as of 2025 it ranks 3949th, occurring in about 1 in 63,262 births. The name is most common in California, reflecting its Hispanic heritage. Despite its waning popularity, Alfonzo carries a noble meaning and a vintage charm that appeals to parents seeking a less common alternative to Alfonso or Alphonso.
Alfonzo is a variant of Alfonso, derived from the Visigothic name Adalfuns, composed of the elements 'adal' (noble) and 'funs' (ready). The name was common among Spanish and Italian royalty, including multiple kings of Spain and Naples. The spelling with 'z' emerged as a less common variant, influenced by the Italian form Alfonzo. It has been in use in the United States since the late 19th century.
Where Alfonzo is most popular
Births per 100,000 boys by state. Press play or drag the slider to watch it move across the decades. The lightest shade means too few recorded births.
Nicknames & variants
Nicknames: Al, Fonz, Fonzie
Sibling names for Alfonzo
Names that share Alfonzo's style, for a brother or sister.
