The baby name Alfonso appears in baby name data for the United States from 1910 to 2024. It was most popular in 1956 with 585 babies given the name.
Over the period shown, Alfonso has stayed at a similar level of popularity.
| Year | Count |
|---|---|
| 1910 | 46 |
| 1911 | 34 |
| 1912 | 105 |
| 1913 | 120 |
| 1914 | 121 |
| 1915 | 160 |
| 1916 | 172 |
| 1917 | 200 |
| 1918 | 223 |
| 1919 | 209 |
| 1920 | 259 |
| 1921 | 263 |
| 1922 | 259 |
| 1923 | 267 |
| 1924 | 275 |
| 1925 | 290 |
| 1926 | 277 |
| 1927 | 299 |
| 1928 | 286 |
| 1929 | 279 |
| 1930 | 316 |
| 1931 | 385 |
| 1932 | 179 |
| 1933 | 148 |
| 1934 | 123 |
| 1935 | 96 |
| 1936 | 145 |
| 1937 | 130 |
| 1938 | 197 |
| 1939 | 134 |
| 1940 | 204 |
| 1941 | 214 |
| 1942 | 211 |
| 1943 | 224 |
| 1944 | 193 |
| 1945 | 188 |
| 1946 | 230 |
| 1947 | 298 |
| 1948 | 461 |
| 1949 | 316 |
| 1950 | 304 |
| 1951 | 214 |
| 1952 | 260 |
| 1953 | 274 |
| 1954 | 271 |
| 1955 | 554 |
| 1956 | 585 |
| 1957 | 481 |
| 1958 | 406 |
| 1959 | 428 |
| 1960 | 409 |
| 1961 | 344 |
| 1962 | 419 |
| 1963 | 416 |
| 1964 | 338 |
| 1965 | 429 |
| 1966 | 328 |
| 1967 | 295 |
| 1968 | 296 |
| 1969 | 322 |
| 1970 | 278 |
| 1971 | 282 |
| 1972 | 265 |
| 1973 | 273 |
| 1974 | 239 |
| 1975 | 297 |
| 1976 | 232 |
| 1977 | 274 |
| 1978 | 272 |
| 1979 | 285 |
| 1980 | 298 |
| 1981 | 292 |
| 1982 | 253 |
| 1983 | 224 |
| 1984 | 216 |
| 1985 | 266 |
| 1986 | 231 |
| 1987 | 245 |
| 1988 | 269 |
| 1989 | 272 |
| 1990 | 276 |
| 1991 | 285 |
| 1992 | 344 |
| 1993 | 317 |
| 1994 | 260 |
| 1995 | 272 |
| 1996 | 247 |
| 1997 | 276 |
| 1998 | 275 |
| 1999 | 324 |
| 2000 | 324 |
| 2001 | 256 |
| 2002 | 236 |
| 2003 | 200 |
| 2004 | 300 |
| 2005 | 311 |
| 2006 | 315 |
| 2007 | 302 |
| 2008 | 298 |
| 2009 | 277 |
| 2010 | 194 |
| 2011 | 178 |
| 2012 | 259 |
| 2013 | 253 |
| 2014 | 185 |
| 2015 | 284 |
| 2016 | 219 |
| 2017 | 176 |
| 2018 | 152 |
| 2019 | 144 |
| 2020 | 76 |
| 2021 | 220 |
| 2022 | 158 |
| 2023 | 125 |
| 2024 | 180 |