Baby Names US
boys' name ★ peaked 1916

Aloysius

Meaning Latinization of Occitan Aloys, an Occitan form of Louis Gender Boy Rank 2025 #4,864 Trend ↑ Rising 17%

Latinization of Occitan Aloys, an Occitan form of Louis.

Rank 2025
#4,864
among boys · ↓153 vs 2024
Babies in 2025
20
named Aloysius · -5% vs 2024
How common
1 in 85,404
boys born in 2025
Peak year
1916
199 babies
All-time total
5,724
#1,636 all-time among boys
First recorded
1880
in Social Security records

Aloysius popularity over time

5,724 babies have been named Aloysius since 1880, according to official Social Security records. Switch measure to see births per year or the yearly rank.

Measure
Births per 1,000 babies of that sex, comparable across eras
0.10.20.30.418801900192019401960198020002020Peak 1898Boys

By decade. Change compares yearly averages, so the current partial decade is on equal footing. Best rank is the name's best yearly rank within the decade.

Decade Boys Per year Change Best rank
1880s 119 12 – #464
1890s 252 25 +112% #312
1900s 261 26 +4% #358
1910s 1,372 137 +426% #393
1920s 1,477 148 +8% #431
1930s 632 63 -57% #634
1940s 340 34 -46% #894
1950s 254 25 -25% #1,331
1960s 217 22 -15% #1,350
1970s 157 16 -28% #1,738
1980s 144 14 -8% #2,339
1990s 102 10 -29% #4,458
2000s 121 12 +19% #4,585
2010s 161 16 +33% #3,783
2020s (to 2025) 115 19 +19% #4,711

Where Aloysius is heading

A five-year projection from the recent trend in births per 1,000 boys (damped so it flattens over time), converted to babies at today's birth totals. The implied rank places that projection in the 2025 field. A projection, not a promise: real trends bend.

Year Projected babies Per 1,000 boys Implied rank
2026 20 0.01 outside top 500
2027 21 0.01 outside top 500
2028 21 0.01 outside top 500
2029 22 0.01 outside top 500
2030 22 0.01 outside top 500

The story of Aloysius

Aloysius is rare for boys in the United States, ranked #4,864 in 2025 with 20 babies given the name. It is currently rising compared with a decade ago.

Since 1880, 5,724 American babies have been named Aloysius. Its peak came in 1916, when 199 newborns received the name, the signature sound of the 1910s.

The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Aloysius stood among all boys' names in any year, or use the compare tool to plot it against other names.

How old are people named Aloysius?

The median living Aloysius is about 52 years old; half are between 22 and 72. An estimated 1,400 people named Aloysius are alive in the United States today.

median 52 020406080100

Estimated from births per year and Social Security period life tables; an approximation of the living age distribution, by age in years.

Aloysius year by year

Every year since 2001, and five-year steps back to 1880. Rank is within each sex.

Year Boys Boys rank
2025 20 #4,864
2024 21 #4,711
2023 17 #5,479
2022 19 #5,026
2021 20 #4,788
2020 18 #5,047
2019 18 #5,165
2018 17 #5,328
2017 28 #3,783
2016 15 #5,802
2015 18 #5,068
2014 11 #7,074
2013 16 #5,413
2012 12 #6,643
2011 12 #6,596
2010 14 #6,048
2009 15 #5,814
2008 10 #7,716
2007 14 #5,915
2006 13 #6,108
2005 11 #6,655
2004 14 #5,504
2003 7 #8,693
2002 13 #5,409
2001 8 #7,556
2000 16 #4,585
1995 8 #6,434
1990 10 #5,009
1985 17 #2,834
1980 16 #2,833
1975 11 #3,253
1970 21 #1,940
1965 21 #1,722
1960 27 #1,552
1955 27 #1,485
1950 29 #1,341
1945 32 #1,163
1940 50 #894
1935 49 #903
1930 93 #634
1925 136 #527
1920 194 #431
1915 187 #393
1910 29 #524
1905 26 #421
1900 37 #358
1895 27 #358
1890 13 #533
1885 15 #480
1880 12 #527

Famous people named Aloysius

The most globally famous bearers of the name, ranked by fame across Wikipedia editions (Pantheon project, MIT).

  1. 1 Aloysius Gonzaga Aloysius Gonzaga Italian Jesuit seminarian and saint (1568–1591) 16th century
  2. 2 Aloysius Stepinac Aloysius Stepinac Croatian Latin Catholic cardinal (1898–1960) 19th century
  3. 3 Aloysius Bertrand Aloysius Bertrand French poet (1807–1841) 19th century
  4. 4 Aloysius Lilius Aloysius Lilius Italian astronomer (c. 1510–1576) 16th century
  5. 5 Aloysius Ambrozic Aloysius Ambrozic Cardinal 1930–2011 · Contemporary

Portraits from Wikipedia (Wikimedia Commons).

Frequently asked questions

Quick answers about Aloysius, drawn from the same Social Security data as the charts above.

How old is the average Aloysius?

The median living Aloysius is about 52 years old. Half of all living Aloysiuss are between 22 and 72 years old.

How many people named Aloysius are alive today?

An estimated 1,400 people named Aloysius are alive in the United States, based on 5,724 recorded births and Social Security life tables.

What does the name Aloysius mean?

Latinization of Occitan Aloys, an Occitan form of Louis.

How popular is the name Aloysius in 2025?

Aloysius ranked #4,864 among boys' names in the United States in 2025, with 20 babies given the name, according to Social Security Administration data.

How many people are named Aloysius?

5,724 babies have been named Aloysius in the United States since 1880, based on Social Security card applications.

When was the name Aloysius most popular?

Aloysius peaked in 1916, when 199 newborns received the name.

Is Aloysius a boy or girl name?

Aloysius is overwhelmingly a boy's name: 100% of babies with the name.

Is the name Aloysius rising or falling?

Aloysius is on the rise, noticeably more popular now than a decade ago.

Will Aloysius become more popular?

Aloysius is trending upward. If the recent trend holds, we project roughly 22 boys named Aloysius in 2030, which would rank outside the top 500. Forecasts assume the current trend continues and become less certain further out.

Who are famous people named Aloysius?

Well-known people named Aloysius include Aloysius Gonzaga (religious figure), Aloysius Stepinac (religious figure), Aloysius Bertrand (writer).

Names like Aloysius

Names that sound and feel close to Aloysius: shared sounds, similar era, similar popularity. Each links to its full history.

Compare Aloysius with similar names → More names starting with A →