Alfonzia is a very rare variant of Alfonzo that was most common in the 1950s and has all but disappeared.
Alfonzia is a boy name. It last appears in U.S. records in 1975. Alfonzia first appears in 1919 and peaked in 1951 (15 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1975 | 6 | — | #4,813 |
| 1970 | 5 | — | #4,741 |
| 1969 | 5 | — | #4,422 |
| 1968 | 5 | — | #4,151 |
| 1965 | 5 | — | #3,940 |
| 1964 | 6 | — | #3,606 |
| 1961 | 10 | — | #2,708 |
| 1959 | 6 | — | #3,626 |
| 1958 | 9 | — | #2,820 |
| 1957 | 10 | — | #2,634 |
| 1956 | 9 | — | #2,803 |
| 1955 | 8 | — | #2,968 |
| 1953 | 5 | — | #3,815 |
| 1952 | 6 | — | #3,379 |
| 1951 | 15 | — | #1,974 |
| 1949 | 5 | — | #3,698 |
| 1944 | 9 | — | #2,471 |
| 1941 | 7 | — | #2,879 |
| 1936 | 8 | — | #2,634 |
| 1935 | 6 | — | #3,262 |
| 1934 | 6 | — | #3,293 |
| 1933 | 9 | — | #2,545 |
| 1931 | 7 | — | #3,100 |
| 1927 | 5 | — | #4,215 |
| 1921 | 5 | — | #4,334 |
| 1919 | 9 | — | #2,885 |