Aloysius
Aloysius was given to 20 boys in 2025, #4,863 among boys’ names; 5,724 Americans have been recorded with it since 1880 (Social Security Administration, published May 2026).
An estimated 1,330 Americans named Aloysius and born in the U.S. are alive in 2026 (23% of everyone recorded); the median is 49 years old and half are between 21 and 70.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Aloysius by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
What does Aloysius mean?
Wiktionary, English section
Aloysius is “a male given name from the Germanic languages, notably of a 16th-century Italian saint.”
Latinization of Occitan Aloys, an Occitan form of Louis. Doublet of Louis.
/æl.əʊˈɪʃ.əs/
Meaning: Wiktionary, English section, as of Sep 25, 2026 (CC BY‑SA 4.0).
How popular is Aloysius?
#4,863 among boys’ names, 2025
Aloysius rose from #5,066 in 2015 to #4,863 in 2025 among boys’ names; its share of boys born rose from 9.4 to 11.7 per million.
199 babies in 1916, the peak
Aloysius peaked in 1916, when 199 boys were given it, #394 among boys’ names. The 20 births of 2025 are 10% of that peak.
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2025 | 20 | #4,863 | 0.01 |
| 2024 | 21 | #4,707 | 0.01 |
| 2023 | 17 | #5,474 | 0.01 |
| 2022 | 19 | #5,022 | 0.01 |
| 2021 | 20 | #4,784 | 0.01 |
| 2020 | 18 | #5,043 | 0.01 |
| 2019 | 18 | #5,161 | 0.01 |
| 2018 | 17 | #5,324 | 0.01 |
| 2017 | 28 | #3,779 | 0.02 |
| 2016 | 15 | #5,798 | 0.01 |
Every recorded year (146)
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2015 | 18 | #5,066 | 0.01 |
| 2014 | 11 | #7,069 | 0.01 |
| 2013 | 16 | #5,409 | 0.01 |
| 2012 | 12 | #6,637 | 0.01 |
| 2011 | 12 | #6,590 | 0.01 |
| 2010 | 14 | #6,044 | 0.01 |
| 2009 | 15 | #5,810 | 0.01 |
| 2008 | 10 | #7,711 | under 0.01 |
| 2007 | 14 | #5,912 | 0.01 |
| 2006 | 13 | #6,104 | 0.01 |
| 2005 | 11 | #6,649 | 0.01 |
| 2004 | 14 | #5,499 | 0.01 |
| 2003 | 7 | #8,686 | under 0.01 |
| 2002 | 13 | #5,402 | 0.01 |
| 2001 | 8 | #7,549 | under 0.01 |
| 2000 | 16 | #4,578 | 0.01 |
| 1999 | 10 | #6,056 | 0.01 |
| 1998 | 10 | #5,848 | 0.01 |
| 1997 | 9 | #6,108 | under 0.01 |
| 1996 | 10 | #5,539 | 0.01 |
| 1995 | 8 | #6,427 | under 0.01 |
| 1994 | 10 | #5,460 | 0.01 |
| 1993 | 13 | #4,452 | 0.01 |
| 1992 | 11 | #4,876 | 0.01 |
| 1991 | 11 | #4,763 | 0.01 |
| 1990 | 10 | #5,002 | under 0.01 |
| 1989 | 15 | #3,618 | 0.01 |
| 1988 | 11 | #4,167 | 0.01 |
| 1987 | 11 | #3,966 | 0.01 |
| 1986 | 12 | #3,653 | 0.01 |
| 1985 | 17 | #2,831 | 0.01 |
| 1984 | 12 | #3,464 | 0.01 |
| 1983 | 18 | #2,580 | 0.01 |
| 1982 | 11 | #3,693 | 0.01 |
| 1981 | 21 | #2,338 | 0.01 |
| 1980 | 16 | #2,832 | 0.01 |
| 1979 | 17 | #2,671 | 0.01 |
| 1978 | 15 | #2,798 | 0.01 |
| 1977 | 10 | #3,614 | 0.01 |
| 1976 | 14 | #2,826 | 0.01 |
| 1975 | 11 | #3,251 | 0.01 |
| 1974 | 15 | #2,547 | 0.01 |
| 1973 | 26 | #1,738 | 0.02 |
| 1972 | 9 | #3,349 | 0.01 |
| 1971 | 19 | #2,126 | 0.01 |
| 1970 | 21 | #1,939 | 0.01 |
| 1969 | 14 | #2,309 | 0.01 |
| 1968 | 20 | #1,789 | 0.01 |
| 1967 | 14 | #2,140 | 0.01 |
| 1966 | 15 | #2,043 | 0.01 |
| 1965 | 21 | #1,721 | 0.01 |
| 1964 | 34 | #1,349 | 0.02 |
| 1963 | 27 | #1,512 | 0.01 |
| 1962 | 25 | #1,588 | 0.01 |
| 1961 | 20 | #1,822 | 0.01 |
| 1960 | 27 | #1,551 | 0.01 |
| 1959 | 22 | #1,709 | 0.01 |
| 1958 | 17 | #1,952 | 0.01 |
| 1957 | 18 | #1,887 | 0.01 |
| 1956 | 28 | #1,479 | 0.01 |
| 1955 | 27 | #1,484 | 0.01 |
| 1954 | 31 | #1,360 | 0.02 |
| 1953 | 32 | #1,330 | 0.02 |
| 1952 | 23 | #1,581 | 0.01 |
| 1951 | 27 | #1,429 | 0.01 |
| 1950 | 29 | #1,340 | 0.02 |
| 1949 | 26 | #1,434 | 0.01 |
| 1948 | 27 | #1,400 | 0.02 |
| 1947 | 34 | #1,252 | 0.02 |
| 1946 | 32 | #1,236 | 0.02 |
| 1945 | 32 | #1,162 | 0.02 |
| 1944 | 34 | #1,136 | 0.02 |
| 1943 | 32 | #1,215 | 0.02 |
| 1942 | 39 | #1,091 | 0.03 |
| 1941 | 34 | #1,129 | 0.03 |
| 1940 | 50 | #894 | 0.04 |
| 1939 | 54 | #829 | 0.05 |
| 1938 | 50 | #884 | 0.05 |
| 1937 | 41 | #984 | 0.04 |
| 1936 | 61 | #780 | 0.06 |
| 1935 | 49 | #903 | 0.05 |
| 1934 | 63 | #779 | 0.06 |
| 1933 | 67 | #746 | 0.07 |
| 1932 | 75 | #721 | 0.07 |
| 1931 | 79 | #673 | 0.08 |
| 1930 | 93 | #634 | 0.08 |
| 1929 | 107 | #578 | 0.10 |
| 1928 | 123 | #547 | 0.11 |
| 1927 | 126 | #549 | 0.11 |
| 1926 | 119 | #563 | 0.11 |
| 1925 | 136 | #527 | 0.12 |
| 1924 | 164 | #483 | 0.14 |
| 1923 | 149 | #499 | 0.14 |
| 1922 | 160 | #489 | 0.15 |
| 1921 | 199 | #431 | 0.18 |
| 1920 | 194 | #431 | 0.18 |
| 1919 | 192 | #423 | 0.20 |
| 1918 | 183 | #437 | 0.18 |
| 1917 | 180 | #421 | 0.19 |
| 1916 | 199 | #394 | 0.22 |
| 1915 | 187 | #393 | 0.22 |
| 1914 | 143 | #397 | 0.22 |
| 1913 | 118 | #393 | 0.23 |
| 1912 | 92 | #401 | 0.21 |
| 1911 | 49 | #409 | 0.22 |
| 1910 | 29 | #524 | 0.15 |
| 1909 | 41 | #371 | 0.25 |
| 1908 | 29 | #453 | 0.19 |
| 1907 | 28 | #439 | 0.19 |
| 1906 | 22 | #473 | 0.17 |
| 1905 | 26 | #421 | 0.20 |
| 1904 | 24 | #431 | 0.19 |
| 1903 | 20 | #471 | 0.17 |
| 1902 | 21 | #461 | 0.17 |
| 1901 | 13 | #561 | 0.12 |
| 1900 | 37 | #358 | 0.25 |
| 1899 | 24 | #376 | 0.23 |
| 1898 | 36 | #321 | 0.29 |
| 1897 | 26 | #367 | 0.23 |
| 1896 | 25 | #388 | 0.21 |
| 1895 | 27 | #358 | 0.23 |
| 1894 | 19 | #440 | 0.16 |
| 1893 | 31 | #312 | 0.28 |
| 1892 | 26 | #375 | 0.21 |
| 1891 | 25 | #341 | 0.25 |
| 1890 | 13 | #533 | 0.12 |
| 1889 | 11 | #582 | 0.10 |
| 1888 | 17 | #464 | 0.14 |
| 1887 | 11 | #545 | 0.11 |
| 1886 | 10 | #607 | 0.09 |
| 1885 | 15 | #480 | 0.14 |
| 1884 | 11 | #570 | 0.10 |
| 1883 | 13 | #498 | 0.12 |
| 1882 | 11 | #577 | 0.10 |
| 1881 | 8 | #653 | 0.08 |
| 1880 | 12 | #527 | 0.11 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Aloysius a boy’s or a girl’s name?
Aloysius has been recorded only for boys: SSA lists no girls with the name in 146 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Aloysius: the SSA national file counts each sex separately.
How many people are named Aloysius, and how old are they?
1,330 alive in 2026, estimated
That is 23% of the 5,724 Americans ever recorded as Aloysius. The median Aloysius alive today is 49 years old; half are between 21 and 70.
The 2020 Census counted 1,749 people named Aloysius (8 women and girls, 1,741 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 1,463 born in the U.S. The Census count is 20% above 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.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Silent Generation | 1928-1945 | 155 |
| Baby Boomers | 1946-1964 | 331 |
| Generation X | 1965-1980 | 226 |
| Millennials | 1981-1996 | 190 |
| Generation Z | 1997-2012 | 185 |
| Generation Alpha | 2013-2025 | 236 |
An estimate, not a count. SSA’s files count people born in the United States who received a Social Security number, so anyone born abroad is not in them; before 1937 most people got a number as adults, and their survival is counted from that age.
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).
Where are babies named Aloysius born?
The states with the most babies named Aloysius are Pennsylvania, Illinois and Michigan, with 51% of its births recorded by state since 1910.
| State | Since 1910 | Rank, boys | vs. national |
|---|---|---|---|
| Pennsylvania | 733 | not ranked | 1.9× |
| Illinois | 363 | not ranked | 1.3× |
| Michigan | 283 | not ranked | 1.5× |
| New York | 279 | not ranked | 0.6× |
| Wisconsin | 240 | not ranked | 1.9× |
| Ohio | 210 | not ranked | 0.8× |
| Minnesota | 142 | not ranked | 1.3× |
| Indiana | 114 | not ranked | 0.9× |
| Missouri | 97 | not ranked | 0.7× |
| New Jersey | 62 | not ranked | 0.4× |
Where Aloysius is more common than its national share predicts
Relative to its national share, Aloysius is most over-represented in Wisconsin: since 1910 it was given 1.9 times as often there as its national share each year would predict.
States: SSA state file, 1910-2025, published May 8, 2026; births count girls and boys together, and the rank is among boys’ names in the state in 2025. The file leaves out any state and year with fewer than 5 babies of the name, so small states are undercounted; each ratio compares the state’s births of Aloysius with the births its national share predicts year by year, for states with at least 100 births of the name.
Names spelled alike
Of these 3 names spelled alike, given to 5,936 babies since 1880, Aloysius is the most given (96% of them). In 2025 it was given to 20 of their 20 babies (100%), again the most given.
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 Aloysius
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 Aloysius and names like it
- Compare Aloysius and AloysuisBirths, ranks, peak and the living estimate side by side.
- The most given names of the 1910sAloysius peaked in 1916.
- Pennsylvania’s most given namesThe state where SSA recorded the most babies named Aloysius since 1910.
- Germanic namesWiktionary’s origin for Aloysius: every such name, by how often it is given.
- The top names of 1916The year the most babies were named Aloysius.
- The names of the Baby BoomersMost people named Aloysius alive today were born 1946-1964.
- Names starting with AMost given first.