Alphonsus
#9,763 in 2025Boys' nameMeaning not yet documented
Alphonsus has been given to 454 babies in the U.S. since 1883. In 2025 it ranked #9,763 of 13,926 boys’ names in use. Its peak year was 1917, with 28 recorded.
Babies named Alphonsus, 2025
1 in 474,000
Alphonsus over time, 1880–2025
Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.
How common is Alphonsus?
Everything below is computed from the 2025 data — the most recent year available.
- Among all babies, 2025
- 1 in 474,000
- 7 of 3,315,165 births
- Among boys only
- 1 in 244,000
- <0.01% of boys
- Rank, 2025
- #9,763
- of 13,926 boys’ names in use
- Coin-flip room size
- 328,272 kids
- Even odds of a second one
Where Alphonsus sits on the popularity scale
Chance at least one other child shares the name
If the other children were drawn at random from the 2025 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.
Put another way: gather 328,272 children born in 2025 and it's an even bet that one of them is another Alphonsus. In a class of 30 the chance is Under 1%.
When Alphonsuss were born
Half of everyone ever recorded as Alphonsus was born before 1924 — so the typical Alphonsus is around 101 today.
- Biggest decade
- 1920s
- 30.0% of all use
- Born in the last 25 years
- 10.1%
- Spread across generations
- Recorded since 1950
- 88
- People you could plausibly meet
1920s — 30.0% of all recorded uses (136).
Is Alphonsus rising or falling?
Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.
- Rank vs 1 year ago
- −1,424
- Places dropped
- Rank vs 5 years ago
- +897
- Places climbed
- Rank vs 10 years ago
- —
- Not ranked then
- Births vs 10 years ago
- —
- Not published both years
- Share of its own peak
- 25.0%
- Peak was 1917 (28)
- Years since peak
- 108
- Years
- Year-to-year steadiness
- Shifting
- 24.6% average annual change
Spellings of Alphonsus
Alphonsus is not the most common spelling — Alphonso is, with 57.9% against Alphonsus's 1.7%.
Where Alphonsus is used
Across 1910–2025, Alphonsus was most concentrated in Massachusetts — about 1 in — boys, against 1 in 557,079 across all states with data. It was least common in Pennsylvania (1 in —).
Most concentrated
- 1Massachusetts1 in —
- 2New York1 in —
- 3Pennsylvania1 in —
Shading is the share of that state's recorded boys given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings. Alphonsus has too little recent state data to map, so this covers all years from 1910.
Alphonsus around the world
Where Alphonsus ranks in official birth records elsewhere in the world. Rankings only — the number of births isn’t comparable between places, so it isn’t shown.
- England & Wales2013–2013#3,822in 2013
- Ireland1964–2012#718in 2012
- South Australia1994–2004#589in 2004
Popularity data from Office for National Statistics, Central Statistics Office and Consumer and Business Services (South Australia). ONS data under Open Government Licence v3.0. CSO, CBS SA data under CC BY 4.0.
Alphonsus by the numbers
The raw record for each sex the name is used for.
Names similar to Alphonsus
Matched on shared beginnings and endings, similar length, and comparable popularity.
Sibling names for Alphonsus
Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.