Alfonzo
A Spanish variant of the Germanic name Alfonso meaning "noble, ready."
Name Census estimates that about 4,178 living Americans carry the first name Alfonzo. The name is used almost exclusively for boys. The average person named Alfonzo today is around 47 years old, and the year with the single highest number of Alfonzo births was 1970 (90 babies).
This page is the full Name Census profile for Alfonzo. Below you will find a gender breakdown showing how the name splits between male and female registrations, a year-by-year popularity chart stretching back to 1880, decade-level totals, the top US states for this name, its meaning and etymology, and a set of frequently asked questions with data-backed answers.
People living today
4.2K
~ 1 in 82,038 Americans
Peak year
1970
90 babies that year
Average age
47
years old
2024 SSA rank
#4,417
Tracked since 1889
Census
Alfonzo in the 2020 Census
The 2020 Census recorded 4,108 people with the first name Alfonzo, which placed it at #4,509 in the published first-name tables. This is a snapshot of people who already had the name at the time of the Census.
The SSA sections elsewhere on this page answer a different question: how often parents gave the name to babies over time. The "people living today" figure on this page is different again: it is a current estimate built from SSA birth records and age-based survival rates, so the two numbers are not expected to match exactly.
2020 Census rank
#4,509
National first-name rank
People counted
4.1K
4,108 in the published race/origin table
Per 100,000
1.4
People with this name in 2020
Largest reported group
Black or African American
48.0% of people with this name
Demographics
Ancestry and ethnicity for Alfonzo
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Alfonzo is Black at 48.0%. The next largest groups are Hispanic (44.4%) and White (3.8%). These figures describe the people who had the name in 2020, not any inherent property of the name itself.
The bar chart below shows how people with the first name Alfonzo described their own race and ethnicity on the 2020 Census form. The Census Bureau groups responses into six broad categories: White, Black or African American, Hispanic or Latino, Asian and Pacific Islander, American Indian and Alaska Native, and Two or More Races. When a category has too few respondents for a given name, the Bureau suppresses the figure to protect individual privacy, which is why some names show fewer than six slices.
Percentages are shown so the breakdown is easy to read across every published category. Because the 2020 Census first-name file also includes raw headcounts for each group, Name Census can show those alongside the percentages in the legend and hover tooltip.
Keep in mind that these are self-reported numbers. A first name does not determine a person's race or ethnicity, and the distribution you see here reflects the specific population who happened to carry the name Alfonzo at the time of the 2020 Census, not any inherent property of the name itself.
- Black or African American48.0% · 1,972
- Hispanic or Latino44.4% · 1,823
- White3.8% · 155
- Two or more races2.3% · 93
- Asian and Pacific Islander0.8% · 33
- American Indian and Alaska Native0.8% · 32
Popularity
Alfonzo: popularity over time
The SSA tracks Alfonzo from the 1880s through to the 2020s, spanning 15 decades of birth certificate data. The biggest single decade for the name was the 1970s, with 802 total registrations. Usage has dropped considerably from its 1970s peak. The most recent decade brought in only a fraction of the registrations that the name once attracted.
Babies born per year
Decades
Alfonzo by decade
The table below breaks the full SSA timeline into ten-year windows. Each row shows how many male and female babies were given the name Alfonzo during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
Geography
Where Alfonzos live
The SSA's state-level files cover 21 states and territories. California, Texas, Illinois recorded the most babies named Alfonzo, while Maryland, Indiana, District of Columbia recorded the fewest. The average across all reporting states is about 99 registrations each.
Origin
Meaning and history of Alfonzo
The name Alfonzo derives from the Germanic name Alfonso, which originated from the medieval Spanish and Portuguese form of the Visigothic name Adefonsus. Adefonsus itself is composed of the Gothic elements "ath" meaning "noble" and "funs" meaning "ready" or "eager."
The name Alfonzo emerged as a variation of the Spanish and Portuguese Alfonso during the Middle Ages. It was particularly prevalent in regions formerly under Moorish rule, such as Andalusia and parts of modern-day Spain and Portugal. The earliest known recorded use of the name Alfonzo dates back to the 9th century CE.
One of the most notable historical figures bearing the name Alfonzo was Alfonzo X, also known as Alfonso the Wise (1221-1284). He was a renowned king of Castile and León, remembered for his patronage of scholarship and the promotion of the Castilian language through his literary works.
Another significant bearer of the name was Alfonzo de Zamora (c. 1285-1349), a Spanish Jewish philosopher and polemicist who engaged in religious debates with Christian scholars during the 14th century.
In the 15th century, Alfonzo V of Aragon (1396-1458), also known as Alfonso the Magnanimous, was a prominent ruler of the Crown of Aragon and the Kingdom of Naples. He was renowned for his military conquests and his support of Renaissance humanism.
During the 16th century, Alfonzo Ferrabosco (c. 1543-1588) was an Italian composer and instrumentalist who served at the court of Queen Elizabeth I in England.
In the 17th century, Alfonzo Chacón (c. 1530-1599) was a Spanish Dominican friar and theologian who played a significant role in the Catholic Reformation and the Council of Trent.
People
Alfonzo + last name combinations
How many people share a full name with Alfonzo as the first name? Click a combination below to see the estimate, or search any pairing.
Related
Other names starting with A
Other first names starting with A with a similar number of bearers.
FAQ
Alfonzo: questions and answers
How many people in the U.S. are named Alfonzo?
Name Census puts the figure at roughly 4,178 living Americans. We arrive at this by taking every SSA birth registration for Alfonzo going back to 1880 and adjusting each cohort for expected survival using CDC actuarial life tables. The result is an age-weighted living-bearer count, not a raw birth total. That works out to about 1 in 82,038 US residents.
Is Alfonzo a common name?
We classify Alfonzo as "Rare". It ranks above 96.1% of all first names in the SSA dataset by living bearers. Across the full history of the data, 5,755 babies have been registered with this name.
When was Alfonzo most popular?
The single biggest year for Alfonzo was 1970, when 90 babies received the name. The fact that the average living Alfonzo is about 47 years old gives you a rough sense of which era contributed the most bearers who are still alive today.
How common was Alfonzo in the 2020 Census?
The published 2020 Census first-name tables recorded 4,108 people with the name Alfonzo, or 1.36 per 100,000 residents. That placed it at #4,509 in the national Census ranking for first names.
Why is the Census count different from the living estimate?
Because they measure different things. The Census figure is a count of people who had the name Alfonzo in 2020. The living estimate aims to answer a current question instead: how many people with the name are alive today, based on SSA birth records and age-based survival rates. Since one number is a 2020 snapshot and the other is a present-day estimate, they are not expected to be identical.
What does the Census say about the gender split for Alfonzo?
In the 2020 Census sex table, Alfonzo appears almost entirely male. Of the 4,109 people counted with this name, 99.7% were male and only a very small share were female. The Census view is a snapshot of people living with the name in 2020, while the SSA section above tracks births across time.
What does the Census say about the background of people named Alfonzo?
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Alfonzo is Black at 48.0%. The next largest groups are Hispanic (44.4%) and White (3.8%). These figures describe the people who had the name in 2020, not any inherent property of the name itself. The percentages in the chart above come from self-reported race and Hispanic-origin responses in the 2020 Census.
Which group reports the name Alfonzo most often in the Census?
Black is the largest reported group for people named Alfonzo in the 2020 Census, accounting for 48.0% (1,972 people in the published table).
Why can the Census sex total and race total differ slightly?
The Census Bureau published separate 2020 tables for sex and for race/Hispanic origin, and the released figures can differ slightly because of privacy protection in the public files. That is why this page treats the gender section and the race/origin section as two related snapshots instead of forcing them into one identical total.
Does every first name have Census demographic data?
No. The public Census first-name release only includes names that met the Bureau's publication rules, so many rarer names in the SSA files have no Census demographic snapshot. When that happens, the SSA trend, gender history, and state sections still appear, but the 2020 Census demographic sections are omitted.
What does the SSA popularity chart show?
The chart tracks births, not the number of people alive with the name today. Each point shows how many babies were given the name Alfonzo in that year. That makes it useful for spotting when the name rose, peaked, or faded.
Is Alfonzo a male name?
Yes, 100.0% of people registered as Alfonzo in the SSA data are male. You can see the full per-sex comparison in the gender distribution section above, which includes the latest year rank, birth count, and peak year for each sex.
Is Alfonzo still being used today?
Yes. The SSA still recorded Alfonzo in 2024, and the page above shows its latest-year rank where available. A name can be well past its peak and still remain in steady use, especially if it built up a large population over earlier decades.
Why can a name have a lot of living bearers even if it is not trendy now?
Because living-bearer counts and current baby-name popularity measure different things. A name like Alfonzo can build up a very large population over many decades, even if fewer parents are choosing it now than they did at its peak.
Where does this data come from?
First-name figures come from the Social Security Administration's national baby name files, which cover every name on a birth certificate from 1880 to 2024. Living-bearer estimates layer in CDC actuarial life tables broken out by sex to account for mortality. The population baseline (342,754,338) is the Census Bureau's latest national estimate. You can read the full calculation on our methodology page.
How many Americans are named Alfonzo?
Want to know how many people share the name Alfonzo? HowManyOfMe.org, our sister site, puts the living-bearer count front and centre.