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Alfonsa

UnisexBoys' nameGirls' name

Feminine form of Alfonso

Alfonsa has been given to 155 babies in the U.S. since 1919. It was used fewer than 5 times in 2025, so it doesn't appear in the latest year's list — today it's a genuinely uncommon pick. Its peak year was 1947, with 11 recorded. It's used for both sexes: 93% boys, 7% girls all-time.

Babies named Alfonsa, 1972

1 in 524,000

Alfonsa over time, 1880–2025

BoysGirls
05101518801900192019401960198020002020

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Girls or boys — Alfonsa over time

In 1972, Alfonsa went to 0% girls and 100% boys.

19191972

A sex is only published in years it reached five applications, so a stretch at 0% or 100% means the other side stayed under that floor — not that it was never used.

Alfonsa: meaning, origin, and history

Feminine form of Alfonso

Deeper origin not confirmed in the cited records

What Alfonsa means

Alfonsa is a feminine form of Alfonso.

Documented naming usage and pronunciation

Alfonsa is used in Spanish and Italian.

Another recorded pronunciation is /al.ˈfon.sa/ for Alfonsa.

Meaning behind the documented name family

The name developed through Alfonsa → Alfonso → Alfonso → *𐌰𐌸𐌰𐌻𐌰𐍆𐌿𐌽𐍃. The family’s meaning is “noble + ready”, recorded in Gothic with the source elements aþalaz and funsaz.

Related names and everyday forms

Related names include Alfonso.

American usage and historical context

In the United States, 144 boys were recorded with the name Alfonsa between 1919 and 1972. Its highest annual count was 11 in 1947; its best national rank was #2,356 in 1947.

In the United States, 11 girls were recorded with the name Alfonsa between 1924 and 1928. Its highest annual count was 6 in 1924; its best national rank was #4,442 in 1924.

Sources & methodologyReferences, data & attribution

Meaning, origin, and language notes draw on the references below.

American popularity figures use published Social Security Administration records for this exact spelling. Counts below five for a name, sex, and year are omitted.

Wiktionary material is available under CC BY-SA 4.0.

How common is Alfonsa?

Alfonsa had fewer than 5 recorded uses in 2025, so these figures use 1972, the last year it was published.

Among all babies, 1972
1 in 524,000
6 of 3,142,796 births
Among boys only
1 in 270,000
<0.01% of boys
Rank, 1972
Unranked
Fewer than 5 uses
Coin-flip room size
363,071 kids
Even odds of a second one

Where Alfonsa sits on the popularity scale

Rarest published (5 a year)#1 — Liam (20,818)

Chance at least one other child shares the name

If the other children were drawn at random from the 1972 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.

Class of 20Under 1%
Class of 30Under 1%
Grade of 100Under 1%
School of 500Under 1%

Put another way: gather 363,071 children born in 1972 and it's an even bet that one of them is another Alfonsa. In a class of 30 the chance is Under 1%.

When Alfonsas were born

Half of everyone ever recorded as Alfonsa was born before 1947 — so the typical Alfonsa is around 78 today.

Median birth year
1947
About 78 years old
Biggest decade
1940s
32.6% of all use
Born in the last 25 years
46.5%
Spread across generations
Recorded since 1950
61
People you could plausibly meet
Choose a decade

1940s — 32.6% of all recorded uses (47).

Is Alfonsa 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
—
Not ranked then
Rank vs 5 years ago
New entry
Not ranked then
Rank vs 10 years ago
—
Not ranked then
Births vs 10 years ago
—
Not published both years
Share of its own peak
0%
Peak was 1947 (11)
Years since peak
78
Years
Year-to-year steadiness
Volatile
25.8% average annual change
Best rank ever
#2,356
1947

Spellings of Alfonsa

Alfonsa is not the most common spelling — Alfonso is, with 62.8% against Alfonsa's 0.22%.

Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.

Alfonsa around the world

Where Alfonsa 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.

  • France
    1965–1967
    #2,195
    in 1967

Popularity data from Institut national de la statistique et des études économiques. INSEE data under Licence Ouverte / Etalab 2.0.

Alfonsa by the numbers

The raw record for each sex the name is used for.

As a boy's name

Rank in 2025
Unranked
Trend vs 5 yrs ago
—
Best rank ever
#2,356
1947
Peak year
1947
11 that year
First recorded
1919
Last recorded
1972
All-time count
144
Count in 2025
Under 5

As a girl's name

Rank in 2025
Unranked
Trend vs 5 yrs ago
—
Best rank ever
#4,442
1924
Peak year
1924
6 that year
First recorded
1924
Last recorded
1928
All-time count
11
Count in 2025
Under 5

Names similar to Alfonsa

Matched on shared beginnings and endings, similar length, and comparable popularity.

AlfonziaAlfardAlfredaAlfreadAlfioAlfonsAlfonceAlfieAlfonseMansaAlfreddieAlfonzoAlfonzaAlfaAlphonsaAlferdAlferdoAlforniaAlfonzieAlfansoAlfonsonAlfordAlfonsoAlfy

Sibling names for Alfonsa

Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.

Explore around Alfonsa

Top names of 1947, Alfonsa's peak yearThe 1940s in fullOther names that peaked in 1947Boys' names starting with A