Alphonsus
Alphonsus was given to 7 boys in 2025, #9,763 among boys’ names; 454 Americans have been recorded with it since 1883 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Alphonsus by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Alphonsus?
#9,763 among boys’ names, 2025
Alphonsus entered the boys’ rankings after 2015 and stood at #9,763 in 2025.
28 babies in 1917, the peak
Alphonsus peaked in 1917, when 28 boys were given it, #1,291 among boys’ names. The 7 births of 2025 are 25% of that peak.
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2025 | 7 | #9,763 | 4.1 |
| 2024 | 9 | #8,339 | 5.2 |
| 2023 | 10 | #7,768 | 5.8 |
| 2022 | 8 | #9,021 | 4.6 |
| 2020 | 6 | #10,660 | 3.5 |
| 2019 | 6 | #10,868 | 3.3 |
| 1978 | 5 | #5,803 | 3.0 |
| 1975 | 5 | #5,483 | 3.2 |
| 1965 | 9 | #2,782 | 4.8 |
| 1962 | 7 | #3,308 | 3.4 |
Every recorded year (51)
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 1959 | 5 | #4,005 | 2.3 |
| 1957 | 5 | #4,002 | 2.3 |
| 1950 | 6 | #3,330 | 3.4 |
| 1945 | 5 | #3,344 | 3.7 |
| 1942 | 9 | #2,526 | 6.5 |
| 1941 | 9 | #2,495 | 7.3 |
| 1940 | 6 | #3,141 | 5.2 |
| 1939 | 5 | #3,487 | 4.5 |
| 1937 | 5 | #3,532 | 4.7 |
| 1936 | 9 | #2,453 | 8.7 |
| 1935 | 6 | #3,265 | 5.8 |
| 1932 | 7 | #3,095 | 6.7 |
| 1931 | 7 | #3,101 | 6.7 |
| 1930 | 6 | #3,601 | 5.5 |
| 1929 | 13 | #2,202 | 12.1 |
| 1928 | 15 | #2,049 | 13.5 |
| 1926 | 9 | #2,908 | 8.1 |
| 1925 | 14 | #2,194 | 12.5 |
| 1924 | 20 | #1,779 | 17.7 |
| 1923 | 13 | #2,332 | 11.9 |
| 1922 | 22 | #1,648 | 20.2 |
| 1921 | 10 | #2,806 | 9.1 |
| 1920 | 20 | #1,750 | 18.8 |
| 1919 | 10 | #2,672 | 10.2 |
| 1918 | 8 | #3,102 | 7.9 |
| 1917 | 28 | #1,291 | 30.3 |
| 1916 | 10 | #2,547 | 11.2 |
| 1915 | 11 | #2,312 | 13.0 |
| 1914 | 13 | #1,778 | 19.9 |
| 1913 | 8 | #2,095 | 15.6 |
| 1911 | 5 | #1,746 | 22.1 |
| 1901 | 6 | #947 | 56.4 |
| 1900 | 5 | #1,316 | 33.2 |
| 1898 | 8 | #803 | 65.2 |
| 1895 | 8 | #798 | 68.1 |
| 1892 | 9 | #749 | 73.7 |
| 1890 | 5 | #1,002 | 45.0 |
| 1889 | 5 | #974 | 45.2 |
| 1887 | 6 | #822 | 59.2 |
| 1884 | 6 | #852 | 52.4 |
| 1883 | 5 | #894 | 47.8 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Alphonsus a boy’s or a girl’s name?
Alphonsus has been recorded only for boys: SSA lists no girls with the name in 51 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Alphonsus: the SSA national file counts each sex separately.
How many people are named Alphonsus, and how old are they?
An estimated 94 Americans named Alphonsus and born in the U.S. are alive in 2026, too few to state an age range. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 300 people named Alphonsus (0 women and girls, 300 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 75 born in the U.S. The Census count is 4.0 times that prediction. Possible reasons: the Census counts people born abroad, whom SSA’s files leave out, and it records the name people give, which SSA may have recorded under another spelling or as part of a compound name.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
Names spelled alike
Of these 2 names spelled alike, given to 544 babies since 1880, Alphonsus is the most given (83% of them).
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Alphonsus
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Alphonsus and names like it
- Compare Alphonsus and AlphonsBirths, ranks, peak and the living estimate side by side.
- The most given names of the 1910sAlphonsus peaked in 1917.
- Pennsylvania’s most given namesThe state where SSA recorded the most babies named Alphonsus since 1910.
- The top names of 1917The year the most babies were named Alphonsus.
- Names starting with AMost given first.