2010
#156,044
National surname rank
Recorded bearers 104
First available Census row
Per 100,000 0.04
Very Rare Last name
Mazzillo
A surname of Italian origin likely derived from a place name or location.
According to the 2020 US Census Bureau surname tables, roughly 122 Americans carry the last name Mazzillo. That puts it at #152,339 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,809,462 residents).
This page is the full Name Census profile for the Mazzillo surname. You will find the Census Bureau frequency data, a multi-census history view, an ancestry and ethnicity breakdown based on self-reported demographics, the name's meaning and origin where available, and answers to the most common questions people ask about this surname.
Bearers in the US
122
1 in 2,809,462
Census rank
#152,339
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
106
very rare in the US
Popularity narrative
The Census Bureau recorded 106 bearers of the surname Mazzillo in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 152339th position in the national surname ranking.
Among Census respondents with the surname Mazzillo, the largest self-reported group is White at 84.9%. The next largest groups are Hispanic (9.4%) and Two or More Races (2.8%).
Origin
Meaning and origin of Mazzillo
The surname MAZZILLO originated in Italy, likely during the medieval period. It is believed to have derived from the Italian word "mazza," which means "club" or "mace," and may have been initially given as a nickname to someone who carried a club as a weapon or tool.
One of the earliest known references to the MAZZILLO name can be found in historical records from the region of Campania in southern Italy, dating back to the 15th century. The name was particularly prevalent in the province of Salerno and the surrounding areas.
During the Renaissance period, the MAZZILLO name gained prominence in various parts of Italy. One notable figure was Pietro MAZZILLO, a renowned painter and sculptor who lived in Naples during the late 16th century (c. 1550-1620). His works can still be found in several churches and museums across Italy.
As Italy experienced periods of political turmoil and economic hardship, many families with the MAZZILLO surname migrated to other parts of Europe and eventually to the Americas. In the 17th century, records show a family named MAZZILLO settling in the Spanish-controlled region of what is now Mexico.
In the 19th century, a prominent MAZZILLO was Vincenzo MAZZILLO (1807-1885), an Italian lawyer and politician who served as a deputy in the Parliament of the Kingdom of Sardinia. He was a vocal advocate for the unification of Italy and played a significant role in the Risorgimento movement.
Another notable figure was Giuseppe MAZZILLO (1870-1946), an Italian-American businessman and philanthropist who founded the MAZZILLO Macaroni Company in New York City. His company played a significant role in popularizing Italian cuisine in the United States during the early 20th century.
Throughout history, variations of the MAZZILLO surname have emerged, such as MAZZILLA, MAZZILLI, and MAZZELLA, reflecting regional dialects and spelling variations. However, the core meaning and origin of the name have remained consistent, tracing back to its Italian roots and the reference to a club or mace.
Demographics
Ancestry and ethnicity for Mazzillo
Among Census respondents with the surname Mazzillo, the largest self-reported group is White at 84.9%. The next largest groups are Hispanic (9.4%) and Two or More Races (2.8%).
The bar chart below shows how Mazzillo bearers 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 surname, the Bureau suppresses the figure to protect individual privacy, which is why some names show fewer than six slices.
Percentages are shown for every Census year so the breakdown stays comparable over time. When the source file also includes raw headcounts, Name Census shows those alongside the percentages in the legend.
Keep in mind that these are self-reported numbers. A person's surname does not determine their race or ethnicity, and the distribution you see here reflects the specific population who happened to carry the Mazzillo surname at the time of the 2020 Census, not any inherent property of the name itself.
- White84.9% · 90
- Hispanic or Latino9.4% · 10
- Two or more races2.8% · 3
- Black or African American1.9% · 2
- Asian and Pacific Islander0.9% · 1
Timeline
Historical Census data for Mazzillo
Mazzillo appears in 2 published Census surname files: 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2020
#152,339
National surname rank
Recorded bearers 106
+2 bearers (+1.9%)
Per 100,000 0.04
Rank movement Up 3,705 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #156,044 | 104 | 0.04 | First available Census row | First available Census row |
| 2020 | #152,339 | 106 | 0.04 | +2 bearers (+1.9%) | Up 3,705 places |
For 2020, the Census Bureau published race and Hispanic-origin columns as counts rather than percentages. Name Census converts those counts back into shares so the ancestry section stays comparable with the older surname files.
Year on year
2010 vs 2020 Census
How has the Mazzillo surname changed between Census years? The chart shows bearer count side by side, and the table compares rank, count, and frequency.
Census year comparison
20102020
| Metric | 2010 | 2020 | Change |
|---|---|---|---|
| Rank | #156,044 | #152,339 | 2.4% |
| Count | 104 | 106 | 1.9% |
| Per 100K | 0.04 | 0.04 | -11.3% |
Between the 2010 and 2020 Census, the number of Mazzillo bearers went from 104 to 106 (+1.9% change). The surname moved up 3,705 positions in the national ranking, going from #156,044 to #152,339.
FAQ
Mazzillo surname: questions and answers
How many people in the U.S. have the surname Mazzillo?
Name Census estimates that about 122 living Americans carry the surname Mazzillo. Using the current population baseline, that works out to roughly 1 in 2,809,462 residents.
How common is Mazzillo?
Mazzillo ranks #152,339 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.04 per 100,000 residents, which is about 0 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 106 people with the surname Mazzillo. That is different from the site's living-bearer estimate (122), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.04 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.04 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 0 of them to have the surname Mazzillo.
Has Mazzillo become more or less common over time?
Between 2010 and 2020, the surname Mazzillo went from 104 recorded bearers to 106. That is an increase of 2 (+1.9%). In the national ranking it rose from #156,044 to #152,339.
What does the Census say about the background of Mazzillo?
Among Census respondents with the surname Mazzillo, the largest self-reported group is White at 84.9%. The next largest groups are Hispanic (9.4%) and Two or More Races (2.8%). These figures come from the 2020 Census Bureau surname tables, based on how respondents described their own race and ethnicity.
Which group reports this surname most often?
White is the largest self-reported group for the surname Mazzillo in the 2020 Census, accounting for 84.9% (90 people in the source table).
What is the full ancestry breakdown?
Mazzillo appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (84.9%), Hispanic (9.4%), Two or More Races (2.8%). For 2020, the source file also published raw headcounts for each group, which is why this page can show both percentages and counts in the ancestry section.
Is this page using the latest Census data?
Yes. This page is using the latest surname file currently loaded on Name Census, which is 2020. The historical section above also keeps any older Census surname entries we have for Mazzillo (2010, 2020).
Does the Census include every surname?
No. The Census Bureau only publishes surnames that appeared at least 100 times in a given decennial Census. That means very rare surnames are excluded entirely, and a surname can appear in one Census release but disappear from a later one if it falls below the reporting threshold.
Why don't the ancestry percentages always add up to exactly 100%?
There are two main reasons: rounding and suppression. The Census Bureau rounds published values, and it may suppress very small cells to protect privacy. For 2020, the Bureau also published raw group counts rather than direct percentages, so Name Census converts those counts back into shares for comparability across census years.
What does Mazzillo mean?
A surname of Italian origin likely derived from a place name or location. The fuller origin note on this page goes into more detail.
Where does the surname data come from?
All surname statistics on Name Census are drawn from the US Census Bureau's decennial surname frequency tables. These files list every surname that appeared 100 or more times in the 2020 Census, along with a count, a per-100,000 rate, and a self-reported demographic breakdown. You can read the full explanation on our methodology page.
How does Name Census estimate living bearers?
For surnames, Name Census does not age cohorts the way it does for first names. Instead, it takes the Census Bureau's published frequency for Mazzillo (0.04 per 100,000) and applies that rate to the current U.S. resident population to estimate how many living Americans have the surname today.
How many people have the surname Mazzillo?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.